Space/Astronomy Sitemap - Page 2 2016-09-26

Red Planet Greetings!
Mars on a holiday card -- a gorgeous sight!

OrnamOrnamental Views from Hubbleental Views from Hubble
Hubble shares the ornaments of the cosmos!

Celestial Snow Family Belies Dark Matter
Dark matter is the backdrop for another imaginative Hubble card.

Dark Matter for a Dark Winter's Night
Dark matter on a holiday card? Why not?

Hubble Images Grace Holiday Cards
Introducing Hubble holiday cards!

A Winter Wonderland Made from a Nebula
A starbirth nebula holiday greeting card!

Visit the Coldest Place in the Universe
The coldest place in the universe isn't quite absolute zero, but it's close. It's in a cloud of gas and dust called the Boomerang Nebula

Pluto IS a Dwarf Planet!
Pluto has an ice cap! Images from New Horizons uncover bright area on the dwarf planet's surface.

Visit the Coldest Place in the Universe
The coldest place in the universe isn't quite absolute zero, but it's close. It's in a cloud of gas and dust called the Boomerang Nebula

Visit the Coldest Place in the Universe
The Boomerang is the coldest place in the universe, but there are other places that are quite cold, too.

Pluto IS a Dwarf Planet!
So, is Pluto a planet or not? Read here to find out!

Pluto IS a Dwarf Planet!
Pluto is a distant outpost in the solar system and key to understanding that distant, frigid region.

Pluto IS a Dwarf Planet!
A tale of planetary discovery in the American Southwest began a saga for distant Pluto.

Dawn's Trip to Ceres
The dwarf planet Ceres received its first Earth-based visitor in March 2015. Check out what we know so far about this distant little world.

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Space/Astronomy.

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Space/Astronomy.

Space/Astronomy
Space/Astronomy.

Astronomy Hoaxes and Urban Legends: Revealed
It's not surprising that speculation, rumors and bad astronomy claims abound in the media and urban legend. Here are some of the best-known urban legends about space and astronomy.

Space/Astronomy
Space/Astronomy.

Astronomy Hoaxes and Urban Legends: Revealed
It's not surprising that speculation, rumors and bad astronomy claims abound in the media and urban legend. Here are some of the best-known urban legends about space and astronomy.

Visit December's Celestial Hunter
Meet the mighty hunter of the skies, Orion. It hides a fascinating secret.

Look at What Hubble Sees in Starbirth Clouds: Planetary Disks!
Discovering the birthplaces of planets around newly formed stars in Orion. They're called proplyds and they look as our own solar system may have looked.

Starbirth Beyond Orion: It's Everywhere!
Places of star birth exist throughout our galaxy. Astronomers learn about the mechanics of star and planet birth, and our own solar system's history.

Look Beyond Orion's Stars
Orion appears to be embedded in a giant nebula where stars (and possibly planets) are being born.

Zeroing in on the Orion Nebula
The famous Orion Nebula is one part of the Orion Molecular Cloud.

The Beauty of Star Formation in Orion
The Hubble Space Telescope has taken one of the most iconic and beautiful images of the Orion Nebula.

What are Stars, Really?
This quick primer on stars tells us how they form, how long their life cycles are, and what their ultimate fates will be.

Space Exploration Missions through History
Space exploration has been going on since the 1950s; here's a list of best-known current and future missions.

Saturn Pictures Gallery - Voyager 2 Looks at Saturn's Rings
Saturn Pictures Gallery - Voyager 2 Looks at Saturn's Rings - Voyager 2 false-color image of Saturn's rings. Subtle color variations due to differences in surface composition of the particles making up the rings are enhanced in this image produced by combining ultraviolet, clear, and orange frames. - NASA. Page 2.

10 Things You Should Know About the Sun
Life and existence in the solar system depend on the Sun. Find out some interesting facts about the star closest to us and how it works.

Messenger Spacecraft Images of Mercury - An Overview of Mercury as Messenger Approached
As NASA's MESSENGER neared Mercury on January 14, 2008, the spacecraft took this image of the planet's full crescent. The image shows portions of Mercury previously seen by Mariner 10, but when Mariner 10 flew by the planet at each of its encounters, the sun was nearly overhead. For this MESSENGER flyby, in contrast, the sun is shining obliquely on regions near the day/night boundary (called the terminator) on the right-hand side of the crescent, revealing the surface topography. Page 14.

Messenger Spacecraft Images of Mercury - Counting Mercury's Craters
On January 14, 2008, MESSENGER flew by Mercury and snapped images of a large portion of the surface that had not been previously seen by spacecraft. Ever since the first images were received back on Earth one day later, January 15, MESSENGER team members have been closely examining and studying this

Messenger Spacecraft Images of Mercury - First Results from the Mercury Laser Altimeter
On January 14, 2008, MESSENGER's Mercury Laser Altimeter (MLA) became the first instrument to measure the distance between a spacecraft and the surface of Mercury. MLA operates by first firing a brief laser pulse at the surface. It then measures the time for the pulse to reach the surface and return to the spacecraft, thereby providing a precise distance. Page 11.

Saturn Pictures Gallery - Neon Saturn
Saturn Pictures Gallery - Neon Saturn - Flying over the unlit side of Saturn's rings, the Cassini spacecraft captures Saturn's glow, represented in brilliant shades of electric blue, sapphire and mint green, while the planet's shadow casts a wide net on the rings. - NASA/JPL/University of Arizona. Page 18.

Saturn Pictures Gallery - Pale Blue Orb
Saturn Pictures Gallery - Pale Blue Orb - Not since NASA's Voyager 1 spacecraft saw our home as a pale blue dot from beyond the orbit of Neptune has Earth been imaged in color from the outer solar system. Now, Cassini casts powerful eyes on our home planet, and captures Earth, a pale blue orb -- and a faint suggestion of our moon -- among the glories of the Saturn system. - NASA/JPL/Space Science Institute. Page 16.

Saturn Pictures Gallery - Radio Occultation: Unraveling Saturn's Rings
Saturn Pictures Gallery - Radio Occultation: Unraveling Saturn's Rings - Specially designed Cassini orbits place Earth and Cassini on opposite sides of Saturn's rings, a geometry known as occultation. Cassini conducted the first radio occultation observation of Saturn's rings on May 3, 2005. - NASA/JPL. Page 15.

Saturn Pictures Gallery - Rare Quadruple Transit
Saturn Pictures Gallery - Rare Quadruple Transit - NASA's Hubble Space Telescope captured this image of of four moons of Saturn passing in front of their parent planet. - NASA/JPL/STSI. Page 14.

Saturn Pictures Gallery - Ringscape
Saturn Pictures Gallery - Ringscape - Nine days before it entered orbit, Cassini spacecraft captured this exquisite natural color view of Saturn's rings. The images that make up this composition were obtained from Cassini's vantage point beneath the ring plane with the narrow angle camera on June 21, 2004, at a distance of 6.4 million kilometers (4 million miles) from Saturn. The image scale is 38 kilometers (23 miles) per pixel. - NASA/JPL/Space Science Institute. Page 13.

Saturn Pictures Gallery - Saturn Ring-Plane Crossing
Saturn Pictures Gallery - Saturn Ring-Plane Crossing - This image from the Hubble telescope documents a rare astronomical alignment: Saturn's magnificent ring system turned edge-on. This event occurs when the Earth passes through Saturn's ring plane, as it does about every 15 years. - NASA. Page 10.

Saturn Pictures Gallery - Saturn With Tethys and Dione
Saturn Pictures Gallery - Saturn With Tethys and Dione - Saturn and two of its moons, Tethys (above) and Dione, were photographed by Voyager 1 on November 3, 1980, from 13 million kilometers (8 million miles). - JPL. Page 9.

Saturn Pictures Gallery - Saturn's Active North Pole
Saturn Pictures Gallery - Saturn's Active North Pole - A bizarre six-sided feature encircling the north pole of Saturn near 78 degrees north latitude has been spied by the visual and infrared mapping spectrometer on NASA's Cassini spacecraft. This image is one of the first clear images ever taken of the north polar region as seen from a unique polar perspective. - NASA/JPL/University of Arizona. Page 8.

Saturn Pictures Gallery - Saturn's Auroras
Saturn Pictures Gallery - Saturn's Auroras - These images of Saturn's polar aurora were taken by NASA's Hubble Space Telescope on Jan. 24, 26, and 28. Each of the three images of Saturn combines ultraviolet images of the south polar region (to show the auroral emissions) with visible wavelength images of the planet and rings. - NASA/Hubble/Z. Levay and J. Clarke. Page 7.

Saturn Pictures Gallery - Blinding Saturn
Saturn Pictures Gallery - Blinding Saturn - Surely one of the most gorgeous sights the solar system has to offer, Saturn sits enveloped by the full splendor of its stately rings. - NASA/JPL/Space Science Institute. Page 25.

Messenger Spacecraft Images of Mercury - Messenger Reveals Mercury's Geological History
NASA's MESSENGER spacecraft's closest approach to Mercury on January 14, 2008, acquired this image as part of a mosaic that covers much of the sunlit portion of a hemisphere not view by previous spacecraft. Images such as this can be read in terms of a sequence of geological events and provide insight into the relative timing of processes that have acted on Mercury's surface in the past. Page 5.

Messenger Spacecraft Images of Mercury - Messenger Views Mercury's Horizon
As NASA's MESSENGER spacecraft drew closer to Mercury for its historic first flyby, the spacecraft acquired this image showing a variety of surface textures, including smooth plains at the center of the image, numerous impact craters and rough material that appears to have been ejected from the large crater to the lower right. MESSENGER has acquired over 1200 images of Mercury. Page 3.

Messenger Spacecraft Images of Mercury - Ridges and Cliffs on Mercury's Surface
A complex history of geological evolution is recorded in this frame from the Narrow Angle Camera (NAC), part of the Mercury Dual Imaging System (MDIS) instrument, taken during MESSENGER's close flyby of Mercury on January 14, 2008. Part of an old, large crater occupies most of the lower left portion of the frame. An arrangement of ridges and cliffs in the shape of a

Training for the Mission of a Lifetime
STS-121 mission specialist Piers J. Sellers, wearing a training version of the space suit used for extravehicular activity (EVA), participates in an EVA simulation while anchored to a training version of the shuttle's robotic arm in the Space Vehicle Mockup Facility at Johnson Space Center. The robotic arm has a 50-foot boom, which would be used to reach underneath the orbiter to access tiles. Lora Bailey (right), Manager, JSC Engineering Tile Repair, assisted Sellers. Page 11.

Making History
Astronaut John H. Glenn, Flight Surgeon Dr. William Douglas and equipment specialist Joe Schmitt leave crew quarters prior to the Mercury-Atlas 6 (MA-6) mission. Glenn carries a portable ventilation unit. Page 10.

Space Shuttle Discovery Lifts Off!
Like a roman candle shooting through the blue sky, the launch of Space Shuttle Discovery on mission STS-121 kicks off the fireworks for the U.S. holiday.{return}Commanded by Steven Lindsey, Discovery and its crew of seven astronauts roared from Launch Pad 39B to begin a 15,000-mph chase to rendezvous with the International Space Station. Page 9.

Liberty Bell 7
Astronaut Gus Grissom climbs into

First View of Earth From Moon
On Aug. 23, 1966, the world received its first view of Earth taken by a spacecraft from the vicinity of the Moon. The photo was transmitted to Earth by the Lunar Orbiter I and received at the NASA tracking station at Robledo De Chavela near Madrid, Spain. The image was taken during the spacecraft's 16th orbit. Page 3.

Portrait of a Dying Star
The Bug Nebula, NGC 6302, is one of the brightest and most extreme planetary nebulae known. A blanket of icy hailstones at its center shrouds the fiery, dying star.{return}This image, taken by the NASA Hubble Wide Field Plantery Camera 2, shows impressive walls of compressed gas, laced with trailing strands and bubbling outflows. Page 2.

Space & Astronomy Featured Picture of the Week 2009 - Formerly Space & Astronomy Picture of the Day
Welcome to Space & Astronomy Featured Picture of the Week, Formerly Space & Astronomy Picture of the Day. Discover pictures and images of astronomy and space for 2009.

Image of the Week for February 3, 2006 - Supernova Blast Bonanza in Nearby Galaxy
The nearby dwarf galaxy NGC 1569 is a hotbed of vigorous star birth activity which blows huge bubbles that riddle the main body of the galaxy. The galaxy's

Image of the Week for February 17, 2006 - Life and Death in the Cosmos
The Spitzer Space telescope captured this stunning image of the star-forming nebula called Henize 206, which sits just outside our own Milky Way galaxy, in a satellite galaxy 163,000 light-years away called the Large Magellanic Cloud. As in other star-forming nebulas, the stars here arose when a supernova explosion sent shock waves through surrounding clouds of gas and dust. The new Spitzer picture provides a detailed snapshot of this universal phenomenon. Page 27.

Bright Soil Near 'McCool': Salty Deja Vu?
While driving eastward toward the northwestern flank of

Stellar Rubble May Be Planetary Building Blocks
This artist's concept depicts a pulsar, which is a type of dead star, as well as the surrounding disk of rubble discovered by NASA's Spitzer Space Telescope. The pulsar, called 4U 0142+61, was once a massive star until about 100,000 years ago when it blew up in a supernova explosion and scattered dusty debris into space. Some of that debris was captured into what astronomers refer to as a

Image of the Week for January 6, 2006 - Apollo 11 bootprint
From the Face on Mars last week to the footprint on the moon this week. One of the first steps taken on the Moon, this is an image of Buzz Aldrin's bootprint from the Apollo 11 mission. Neil Armstrong and Buzz Aldrin walked on the Moon on July 20, 1969. Page 33.

Image of the Week for January 20, 2006 - Jerrie Cobb and the Mercury Project
Jerrie Cobb poses next to a Mercury spaceship capsule. And, although she never flew in space, Cobb, along with 24 other women, underwent physical tests similar to those taken by the Mercury astronauts with the belief that she might become an astronaut trainee. All the women who participated in the program, known as First Lady Astronaut Trainees (FLATs), were skilled pilots. Page 31.

Neptune on Triton's Horizon
This composite illustration is of the planet Neptune, as seen from its moon Triton. Neptune's south pole is to the left; clearly visible in the planets' southern hemisphere is a Great Dark Spot, a large anti-cyclonic storm system. This three-dimensional view was created using images from the Voyager spacecraft. Page 26.

A Merger of Mighty Rivers
The Ohio River becomes a tributary of the Mississippi River directly south of Cairo, Illinois, a small city on the spit of land where the rivers converge (at center of this photograph). Brown, sediment-laden water flowing generally northeast to south from the Ohio River is distinct from the green and relatively sediment-poor water of the Mississippi River (flowing northwest to south). Page 18.

Quintuplet Cluster
Penetrating 25,000 light-years of obscuring dust and myriad stars, the Hubble Space Telescope has provided the clearest view yet of one of the largest young clusters of stars inside our Milky Way galaxy, located less than 100 light-years from the very center of the Galaxy. Having the equivalent mass greater than 10,000 stars like our sun, the monster cluster is ten times larger than typical young star clusters scattered throughout our Milky Way. Page 24.

Phoebe: Comet Moon of Saturn
Was Saturn's moon, Phoebe, once a comet? Images from Cassini, taken when the spacecraft entered the neighborhood of Saturn, indicate that Phoebe may have originated in the outer solar system. Phoebe's irregular surface, retrograde orbit, unusually dark surface, assortment of large and small craters, and low average density appear consistent with the hypothesis that Phoebe was part of the Kuiper Belt of icy comets beyond Neptune before it was captured by Saturn. Page 17.

Balancing Act
Skylab 4 commander Gerald Carr jokingly demonstrates weight training in zero gravity as he balances fellow astronaut William Pogue, the mission's pilot, upside down on his finger. paragraphreturn Skylab was America's first space station and orbital science and engineering laboratory. The station was launched into Earth orbit by a Saturn V rocket on May 14, 1973, as a follow up to the Apollo program. Three crews visited the station, with their missions lasting 28, 59 and 84 days, respectively. Page 15.

Ion Engine Inspection
An engineer and a technician check out an ion engine in the Electronic Propulsion Research Building at the Lewis Research Center (now NASA's Glenn Research Center) in 1961. Ion engines use electrostatic charge, something like pulling hot socks out of a clothes dryer. The electrostatic charge pushes the socks away from each other. The fuel used by this device is Xenon, a gas that is four times heavier than air. Page 13.

A Long Way From Home
This image of the Earth and moon in a single frame, the first of its kind ever taken by a spacecraft, was recorded on Sept. 18, 1977, by Voyager 1 when it was 7.25 million miles from Earth. The moon is at the top of the picture and beyond the Earth as viewed by Voyager.{return}In the picture are eastern Asia, the western Pacific Ocean and part of the Arctic. Voyager 1 was directly above Mt. Everest (on the night side of the planet at 25 degrees north latitude) when the picture was taken. Page 12.

Image of the Week for September 09, 2005 - The Reflecting Dust Clouds of Orion
In the vast Orion Molecular Cloud complex, several bright blue nebulas are particularly apparent. Pictured above are two of the most prominent reflection nebulas - dust clouds lit by the reflecting light of bright embedded stars. The more famous nebula is M78, on the upper right, cataloged over 200 years ago. On the lower left is the lesser known NGC 2071. Astronomers continue to study these reflection nebulas to better understand how interior stars form. Page 50.

Image of the Week for September 16, 2005 - The Discovery Space Shuttle
Discovery (OV-103), the third of NASA's fleet of reusable, winged spaceships, arrived at Kennedy Space Center in November 1983. It was launched on its first mission, flight 41-D, on August 30, 1984. It carried aloft three communications satellites for deployment by its astronaut crew. Page 49.

Image of the Week for October 07, 2005 - Astronaut Edwin E. Aldrin, Jr., lunar module pilot, walks on the surface of the Moon
Astronaut Edwin E. Aldrin, Jr., lunar module pilot, walks on the surface of the Moon near the leg of the Lunar Module (LM)

Image of the Week for October 14, 2005 - Hubble Resolves a Blaze of Stars in a Galaxy's Core
The central region of the small galaxy NGC 1705 blazes with the light of thousands of young and old stars in this image, taken by NASA's Hubble Space Telescope. Page 45.

Image of the Week for October 28, 2005 - Fish-Eye View of Atlantis
Fish-eye view of the Space Shuttle Atlantis as seen from the Russian Mir space station during the STS-71 mission. Page 43.

Image of the Week for November 04, 2005 - Aurora From Space
What do auroras look like from space? From the ground, auroras dance high above clouds, frequently causing spectacular displays. The International Space Station (ISS) orbits just at the same height as many auroras, though. Therefore, sometimes it flies over them, but also sometimes it flies right through. The auroral electron and proton streams are too thin to be a danger to the ISS, just as clouds pose little danger to airplanes. Page 42.

Image of the Week for December 16, 2005 - R Aquarii - A Nearby Exploding Star
NASA's Hubble Space Telescope has peered into the inner core of the nearby so-called

Asteroids: What and Where Are They?
An easy exploration of asteroids in the solar system and the Asteroid Belt region where many exist in orbit around the Sun.

Venus - Solar System Fast Facts
Venus is a planet that has fascinated people for centuries. Modern scientific studies show that it is not a habitable planet.

A Short History of Asteroids
How and when asteroids formed. Space/Astronomy.

The Evolution of the Space Suit From 1961 to Today
If you're going to work in space, you have to have the

The Evolution of the Space Suit From 1961 to Today
If you're going to work in space, you have to have the

Going Beyond the Basics
Research astronomy topics and space exploration related resources. Discover definitions and answers to frequently asked questions. Get started in your studies of astronomy and space with basic infomational references. Learn what other people want to know and ask your own questions about space and astronomy basics.

Algeria As Seen From Space
Algerian dunes as seen from space, showing what a varied landscape our planet boasts, and how it's constantly changing. Page 12.

Astronauts Hanging Out Above the Space Shuttle
Astronauts hanging out above the space shuttle, doing the work they were traine dto do. Page 14.

Bruce McCandless Hanging Out In Space
Bruce McCandless hanging out in space, testing a unit designed to help astronauts work in space free of the umbilical cords earlier astronauts used to stay alive. Page 2.

Curvature Of The Earth As Seen Above Africa
Traveling to low-Earth orbit teaches you once and for all that our planet is a rounded body, not a flat pancake. Page 3.

Denmark As Seen From the International Space Station
Denmark As Seen From the International Space Station, showing the constantly changing view that astronauts have from low-Earth orbit.

Earth As Seen From The Space Shuttle Discovery
Earth from the window of space shuttle Discovery. Imagine having Earth as a backdrop as you work. Page 11.

Earth As Seen From Apollo 17
Earth As Seen From Apollo 17, one of the early views of our planet showing it as it really is. Page 13.

Earth As Seen From The Space Shuttle Endeavour
Earth As Seen From The Space Shuttle Endeavour -- the shuttle fleet offered a never-ending change of vistas. Page 15.

Earth As Seen From the Space Shuttle
Earth as seen from the space shuttle offerings a constantly varying view of our living planet. Page 17.

Earth Rising From the Moon
Earth Rising From the Moon -- one of the most breathtaking and quintessential views ever captured on film by astronauts. Page 20.

Europe And Africa As Seen From Space
Europe And Africa as seen from space show no political boundaries -- just land on a watery planet. Page 19.

Fire In Southern Australia As Seen From Space
Fire In Southern Australia spotted from space. There's a fire somewhere on our planet every day. Page 18.

Hurricane Emily From Space
Hurricane Emily from space show us just how wide-spread storms can become as they roam over the planet. Page 8.

The International Space Station Flying High Above The Earth
The International Space Station flying high above Earth -- it's a lonely outpost in space, but soon will be joined by other missions. Page 22.

Full View Of The International Space Station
Full View Of The International Space Station: this is one configuration of a habitat in space. Page 21.

Earth As Seen From The International Space Station
Earth As Seen From The International Space Station high above the planet in

The view from low-Earth orbit
From low-Earth orbit, astronauts can study our planet in great detail, and then share that information with everyone on the ground. Page 4.

Space/Astronomy
Lights across the world at night show us where people have settled, and how much power we waste lighting up the sky. Page 23.

Looking Down On The International Space Station
Looking down on the International Space Station as a spacecraft approaches for docking and crew/supplies delivery. Page 9.

Michael Gernhardt Hanging Out
Michael Gernhardt hanging out in space, doing a spacewalk as a routine part of an astronaut's day. Page 5.

Flying High Over New Zealand
Flying High Over New Zealand shows the very different terrains that exist around the planet. Page 6.

Astronauts Working on Hubble Space Telescope
Astronauts Repairing Hubble -- an important part of living and working in space and achieving technological advances. Page 7.

Southern California Fires As Seen From Space
Southern California fires seen from space; astronauts showing us just where the hot spots are on our planet. Page 10.

Discover the Beauty of the Universe
About.com's Astronomy & Space Pictures is your source for great images and photos of the universe. From the Astronomy Pictures of the Day to space posters, find images to fascinate and educate. You'll find Saturn and Mars astronomy pictures as well as links to space art and astronomy pictures.

Earth: The Water World You Grew Up On
Our search for water worlds begins at Earth.

Oceans on Venus? Really?
Venus may be Earth's twin because it's a rocky planet, but it long ago lost its oceans.

The Missing Waters of Mars
The water from Mars escaped to space and froze underground and at the polar caps.

Europa's Tantalizing Hidden Ocean
Europa could be an icy ocean realm.

Could Ganymede Have an Ocean?
Space/Astronomy.

Enceladus: Water World at Saturn?
Enceladus may well have a briny ocean beneath its icy surface.

Mimas and the Subsurface Ocean
Mimas, the Death Star moon of Saturn, may have a moon.

The Confusing Oceans of Titan
Titan is a frigid, interesting world that may have a subsurface ocean.

Ceres May Have an Ocean, Too
Space/Astronomy.

Top Astronomy and Space Magazines
Good astronomy magazines help you learn about the sky. Here are give that provide all you need to know about stargazing and astronomy.

Looking Back at Earth from Space
An image gallery of Earth pictures.

Looking Back at Earth from Space
An image gallery of Earth pictures.

Jupiter Pictures Gallery - Capturing Callisto
Jupiter Pictures Gallery - Capturing Callisto - The New Horizons Long Range Reconnaissance Imager (LORRI) captured these two images of Jupiter's outermost large moon, Callisto, as the spacecraft flew past Jupiter in late February. New Horizons' closest approach distance to Jupiter was 2,300,000 km. - NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute. Page 16.

Jupiter Pictures Gallery - Cassini's Best Maps of Jupiter
Jupiter Pictures Gallery - Cassini's Best Maps of Jupiter - These color maps of Jupiter were constructed from images taken by the narrow-angle camera onboard NASA's Cassini spacecraft on Dec. 11 and 12, 2000, as the spacecraft neared Jupiter during its flyby of the giant planet. - NASA/JPL. Page 15.

Jupiter Pictures Gallery - Chandra Examines Jupiter During New Horizons Approach
Jupiter Pictures Gallery - Chandra Examines Jupiter During New Horizons Approach - On February 28, 2007, NASA's New Horizons spacecraft made its closest approach to Jupiter on its ultimate journey to Pluto. This flyby gave scientists a unique opportunity to study Jupiter using the package of instruments available on New Horizons - NASA/CXC/SwRI/R.Gladstone et al.; Optical: NASA/ESA/Hubble Heritage (AURA/STScI). Page 14.

Jupiter Pictures Gallery - Comet Fragment Slams into Jupiter
Jupiter Pictures Gallery - Comet Fragment Slams into Jupiter - In July 1994, 21 chunks of comet Shoemaker-Levy 9, which had broken apart a year earlier, slammed into Jupiter. The Hubble telescope recorded this spectacular event. - R. Evans, J. Trauger, H. Hammel and the HST Comet Science Team and NASA. Page 13.

Jupiter Pictures Gallery - Full Jupiter Mosaic
Jupiter Pictures Gallery - Full Jupiter Mosaic - This image of Jupiter is produced from a 2x2 mosaic of photos taken by the New Horizons Long Range Reconnaissance Imager (LORRI), and assembled by the LORRI team at the Johns Hopkins University Applied Physics Laboratory. - NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute. Page 12.

Jupiter Pictures Gallery - Ganymede's Shadow
Jupiter Pictures Gallery - Ganymede's Shadow - The New Horizons Long Range Reconnaissance Imager (LORRI) took this photo of Jupiter at 20:42:01 UTC on January 9, 2007, when the spacecraft was 80 million kilometers (49.6 million miles) from the giant planet. - NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute. Page 11.

Jupiter Pictures Gallery - Io and Ganymede
Jupiter Pictures Gallery - Io and Ganymede - The New Horizons Long Range Reconnaissance Imager (LORRI) took this 4-millisecond exposure of Jupiter and two of its moons at 01:41:04 UTC on January 17, 2007. - NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute. Page 10.

Jupiter Pictures Gallery - Jupiter Ahoy!
Jupiter Pictures Gallery - Jupiter Ahoy! - The Long Range Reconnaissance Imager (LORRI) on NASA's New Horizons spacecraft took this photo of Jupiter on Sept. 4, 2006, from a distance of 291 million kilometers (nearly 181 million miles) away. - NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute. Page 9.

Jupiter Pictures Gallery - Jupiter Aurora
Jupiter Pictures Gallery - Jupiter Aurora - In this Hubble telescope picture, a curtain of glowing gas is wrapped around Jupiter's north pole like a lasso. - John Clarke (University of Michigan) and NASA. Page 8.

Jupiter Pictures Gallery - Jupiter Great Red Spot
Jupiter Pictures Gallery - Jupiter Great Red Spot - This dramatic view of Jupiter's Great Red Spot and its surroundings was obtained by Voyager 1 on Feb. 25, 1979, when the spacecraft was 5.7 million miles (9.2 million kilometers) from Jupiter. - NASA. Page 7.

Jupiter Pictures Gallery - Jupiter Portrait
Jupiter Pictures Gallery - Jupiter Portrait - This true color mosaic of Jupiter was constructed from images taken by the narrow angle camera onboard NASA's Cassini spacecraft on December 29, 2000, during its closest approach to the giant planet at a distance of approximately 10,000,000 km. - NASA/JPL/Space Science Institute. Page 6.

Jupiter Pictures Gallery - Jupiter's Great Red Spot
Jupiter Pictures Gallery - Jupiter's Great Red Spot - As Voyager 1 flew by Jupiter, it captured this photo of the Great Red Spot. - NASA. Page 5.

Jupiter Pictures Gallery - Jupiter's Rings
Jupiter Pictures Gallery - Jupiter's Rings - The New Horizons Long Range Reconnaissance Imager (LORRI) snapped this photo of Jupiter's ring system on February 24, 2007, from a distance of 7.1 million kilometers (4.4 million miles). - NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute. Page 4.

Jupiter Pictures Gallery - Moons around Jupiter
Jupiter Pictures Gallery - Moons around Jupiter - The New Horizons Long Range Reconnaissance Imager (LORRI) took this photo of Jupiter at 20:42:01 UTC on January 9, 2007, when the spacecraft was 80 million kilometers (49.6 million miles) from the giant planet. - NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute. Page 3.

Jupiter Pictures Gallery - On Approach: Jupiter and Io
Jupiter Pictures Gallery - On Approach: Jupiter and Io - This sequence of images was taken on Jan. 8, 2007, with the New Horizons Long Range Reconnaissance Imager (LORRI), while the spacecraft was about 81 million kilometers (about 50 million miles) from Jupiter. - NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute. Page 2.

Jupiter Pictures Gallery - Storms and Moons
Jupiter Pictures Gallery - Storms and Moons - The New Horizons Long Range Reconnaissance Imager (LORRI) took this 2-millisecond exposure of Jupiter at 04:41:04 UTC on January 24, 2007. - NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

Jupiter Pictures Gallery - Ancient Storm
Jupiter Pictures Gallery - Ancient Storm - When 17th-century astronomers first turned their telescopes to Jupiter, they noted a conspicuous reddish spot on the giant planet. This Great Red Spot is still present in Jupiter's atmosphere, more than 300 years later. - Amy Simon (Cornell U.), Reta Beebe (NMSU), Heidi Hammel (Space Science Institute, MIT), Hubble Heritage Team. Page 17.

Jupiter Pictures Gallery
Jupiter Pictures; Jupiter, the fifth planet from the sun, is also the largest in our solar system. Its average distance is approximately 480 million miles, which is about five times the distance from Earth to the Sun. Unlike the terrestrial planets, Jupiter is a large ball of gas, tightly condensed. Enjoy these Jupiter Pictures.

Jupiter Pictures Gallery
Jupiter Pictures; Jupiter, the fifth planet from the sun, is also the largest in our solar system. Its average distance is approximately 480 million miles, which is about five times the distance from Earth to the Sun. Unlike the terrestrial planets, Jupiter is a large ball of gas, tightly condensed. Enjoy these Jupiter Pictures.

Astronomy and Space Activities in Under Thirty Minutes
These astronomy and space activities can keep you or the kids busy while they are learning and having fun at the same time.

Astronaut Costume for Adults - Top Space Related Costumes Ideas for Adults - From Astronaut Costumes to Alien Costumes Ideas
Want an astronaut costume? From Halloween to costume parties to plays or skits, any time you need a costume, check out these space related costumes ideas for adults. From astronaut costumes to alien costumes ideas.

10 Things You Should Know About Mars
Mars is most likely going to be humanity's next planetary home. Learn more about the Red Planet and its ongoing exploration.

Learn about the Moon
What's the Moon? Where did it come from? Why is it cratered? What's a Blue Moon? Here's a quick look at some Moon facts.

Neil Armstrong Pictures - Astronauts Scott and Armstrong inserted into Gemini 8 spacecraft
Astronauts David R. Scott and Neil A. Armstrong inserted into Gemini 8 spacecraft prior to liftoff.

Neil Armstrong Pictures - Former Astronaut Neil Armstrong at Apollo 11 Twentieth Aniversary Picnic
Astronaut Neil Armstrong walking through the crowd at the Apollo 11 Twentieth Aniversary Picnic at the Gilruth Center. He is carrying a drink in his hand while talking to the crowd.

Neil Armstrong Pictures - Former astronauts Armstrong and Cernan talk at Apollo 11 anniversary banquet.
Former astronauts Armstrong and Cernan talk at Apollo 11 anniversary banquet.

Neil Armstrong Pictures - Neil Armstrong At The Lunar Landing Research Facility
Neil Armstrong during training at the Lunar Landing Research Facility (LLRF).

Neil Armstrong Pictures - Neil Armstrong is greeted as he arrives at NASA Glenn Research Center
Neil Armstrong is greeted as he arrives at NASA Glenn Research Center

Neil Armstrong Pictures - Neil Armstrong
Neil Armstrong at Lunar Landing Research Facility (LLRF).

Neil Armstrong Pictures - Portrait of Astronaut Neil A. Armstrong
Portrait of Astronaut Neil A. Armstrong in civilian clothes.

Neil Armstrong Pictures - Portrait of Astronaut Neil A. Armstrong, commander of the Apollo 11 mission
Portrait of Astronaut Neil A. Armstrong, commander of the Apollo 11 Lunar Landing mission in his space suit, with his helmet on the table in front of him. Behind him is a large photograph of the lunar surface.

Neil Armstrong Pictures - View of Astronaut Neil Armstrong in Lunar Module
View of Astronaut Neil A. Armstrong, commander, in the Lunar Module during the Apollo 11 lunar landing mission.

Neil Armstrong Pictures - Apollo 11 astronaut Neil Armstrong looks over flight plans
Apollo 11 Commander Neil Armstrong is looking over flight plans while being assisted by a spacesuit technician during suiting operations in the Manned Spacecraft Operations Building (MSOB) prior to the astronauts' departure to Launch Pad 39A. The three astronauts, Edwin E. Aldrin Jr., Neil A. Armstrong and Michael Collins will then board the Saturn V launch vehicle, scheduled for a 9:32 a.m. EDT liftoff, for the first manned lunar landing mission.

Neil Armstrong Pictures - Armstrong practices in Lunar Module simulator
Neil A. Armstrong, Commander for the Apollo 11 Moon-landing mission, practices for the historic event in a Lunar Module simulator in the Flight Crew Training building at KSC. Accompanying Armstrong on the Moon flight will be Command Module Pilot Michael Collins and Lunar Module Pilot Edwin E. Aldrin Jr. Page 4.

Neil Armstrong Pictures - Astronaut Neil Armstrong presenting a NASA Flight Research Center flag flown on Gemini 8 space mission
Astronaut Neil Armstrong presenting a NASA Flight Research Center flag flown on Gemini 8 space mission

Neil Armstrong Pictures - Astronaut Neil Armstrong studies rock samples during geological field trip
Astronaut Neil Armstrong, commander of the Apollo 11 lunar landing mission, studies rock samples during a geological field trip to the Quitman Mountains area near the Fort Quitman ruins in far west Texas.

Neil Armstrong Pictures - Astronauts Armstrong and Scott walk up ramp at Pad 19 Gemini 8 countdown
Astronauts Neil A. Armstrong (foreground), command pilot, and David R. Scott, pilot, walk up the ramp at Pad 19 during the Gemini 8 prelaunch countdown.

Neil Armstrong Pictures - Astronauts Armstrong and Scott arrive at Hickam Field, Hawaii
Astronauts Neil A. Armstrong (center), command pilot, and David R. Scott, pilot, arrive at Hickam Field, Hawaii on their way from Naha, Okinawa, to Cape Kennedy, Florida. Astronaut Walter M. Schirra Jr. is at extreme left.

Neil Armstrong Pictures - Astronauts Armstrong and Scott during photo session outside KSC
Astronauts Neil A. Armstrong (left), command pilot, and David R. Scott, pilot, the Gemini 8 prime crew, during a photo session outside the Kennedy Space Center (KSC) Mission Control Center. Both men are wearing full space suits and carring their helmets.

Neil Armstrong Pictures - Astronauts Scott and Armstrong in white room entering Gemini 8 spacecraft
Astronauts David R. Scott (left) and Neil A. Armstrong, both in full spacesuits, in white room entering the Gemini 8 spacecraft during countdown simulation.

10 Things You Should Know About Earth
Earth is our home planet, and a member of the solar system's retinue of planets. Learn some fascinating and important facts about our watery home world.

Dr. Goddard Observes Launch Site
Dr. Robert H. Goddard observes the launch site from his launch control shack while standing by the firing control panel. From here he can fire, release, or stop testing if firing was unsatisfactory. Firing, releasing, and stop keys are shown on panel. The rocket is situated in the launch tower. Page 5.

What Is a Blue Moon?
What's a blue moon? One thing for sure -- the Moon is NOT the color blue. But, the idea of blue moon is both a cultural and physical one. Check out our look at the phenomenon.

What Are Black Holes and How Do They Form?
A favorite phenomenon of science fiction writers, black holes are real objects that play an important role in our Universe. Learn more about them here.

What Is Luminosity? - Space / Astronomy
Astronomers use

Were the Moon Landings a Hoax?
Did people really land on the Moon? It's a question that moon landing deniers always ask, despite the very real evidence that they did.

African-Americans in Astronomy and Space
Celebrating Black history Month, African-Americans have played a major role in the history of the United States of America and have much to be proud of. Here, we would like to celebrate just a few of the achievements of African-Americans in the fields of astronomy and space. This list is but a drop in the bucket and while it will continue to expand will never be complete. Discover some role models for Black History Month.

Read about Space Exploration
Explore space exploration through books by people who actually experienced the space race, moon landings, and shuttle rides to the space station!

Biography of Francis R. (Dick) Scobee
Find out more about the late astronaut Francis R. (Dick) Scobee. He was the Space Shuttle Challenger STS-51L Mission Commander on its tragic final flight.

The Life and Times of Neil DeGrasse Tyson
Meet Dr. Neil deGrasse Tyson, astronomer and science popularizer. His

X-ray Astronomy is Hot!
X-ray astronomy reveals the universe's hottest objects and activities to telescopes that orbit high above Earth's surface. Learn more about this branch of astronomy.

Find the Beehive Cluster
Want to see a pretty open cluster? Check out the Beehive! It's a favorite of observers around the world.

Types of Galaxies
We often imagine galaxies to be all spirals like Andromeda or our own Milky Way. But there are many other types of galaxies, classified by their shapes.

Dark Matter: What Role Does it Play in Galaxies?
The role of dark matter in the cosmos gets stranger as astronomers explore more of the universe.

Hubble Spots 13-Billion-year-old Light from Distant Galaxy
Hubble works with two other observatories to spot the most distant galaxy so far to be discovered.

White Dwarf Stars on the Run!
Hubble studies stars in a globular cluster and finds white dwarfs fleeing the core.

A Galaxy Halo Surrounds Andromeda
Hubble Space Telescope helped astronomers measure the gas around the Andromeda Galaxy.

Worlds Around other Stars!
Finding different types of planets.

A Star about to Eat Its Two Closest Planets
Stars eating their planets! Space/Astronomy.

M51: A Galaxy Glitters in X-ray Emissions!
Peek at a galaxy in x-ray light and you find some fascinating, energetic objects and processes going on!

Hubble's Deepest View of the Cosmos to Date
Hubble looks deep into the cosmos to spy out star formation and other activities in ancient galaxies.

A Peek at What Astronomers are Finding
A look at five current research areas in astronomy and recent results.

What Happens When Large Cosmic Structures Collide
A look at some of the largest structures in the universe -- galaxy clusters -- and what happens when they collide.

The Apollo 1 Fire
On January 27, 1967, the crew of Apollo/Saturn 204 (commonly known as Apollo 1) were training for an Earth orbiting mission when tragedy struck.

Maria Mitchell -
Meet Maria Mitchell -- the first U.S. female astronomer, as well as a women's rights proponent and anti-slavery activist.

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Sir Isaac Newton, Galileo's Heir - Brief Biography
A short biography of Sir Isaac Newton, the man who developed the laws of universal gravitation. He claimed he stood on the shoulders of giants.

Sir Isaac Newton
Biography of Sir Isaac Newton, the man who developed the laws of universal gravitation. Page 2.

What is Light to Astronomers?
Find out how astronomers use light to discover information about cosmic objects. The same light you see, is NOT all that exists!

Ticking Stellar Clocks
Pulsars are rotating neutron stars, objects created by the deaths of massive stars. Learn more about these objects that were once massive stars.

Where Does Space Begin?
Where does space begin? It's a good question. The answer depends on how high up in Earth's atmosphere you travel before you hit the vacuum of space.

Visit an Observatory, See the Stars and Planets
Observatories are facilities astronomers use to study the stars, planets, and galaxies. Some of these institutions date back to earliest human history.

The Most Massive Stars in the Universe
Learn about hypergiant stars -- the 800-pound gorillas of the galaxies. They are born hot and heavy, live fast, die young, and leave behind some truly odd remains!

The Oort Cloud: WAY OUT THERE!
Ever wonder where comets come from? Heard of distant worlds

Does Life Exist Elsewhere in Our Galaxy?
The search for life beyond our planet continues as astronomers find and study new worlds around other stars. The next question: do they have life?

The Cassini Mission to Saturn
The Cassini mission to Saturn has been orbiting the ringed planet since 2004. A quick look at its accomplishments reveal a fascinating planetary system.

Five Astro-Misconceptions About Space and Astronomy
People like to tell strange stories about the stars and planets. Most of them aren't supported by science, but which ones? Learn what's true and what's not.

The Perseid Meteor Shower
Learn about August's meteor shower -- the Perseid meteor shower -- and the origin of the tiny bits of dust and ice that make up this annual shower.

Cosmic Rays - Where Do They Come From?
Cosmic rays are high-energy charged particles that travel across the universe at nearly the speed of light. Their origins are still being studied.

Astronomy Events
Discover astronomy events in the night sky as well as Earthly events concerning astronomy.

Named Full Moons - The Twelve Named Full Moons of the Year
Learn more about the full moon names that people have used throughout the year.

Will Star Trek-style Matter Transporters Ever Exist?
Could we develop a Star Trek-style transporter to send people and materials over long distances? It might be possible, but there are technical limitations.

Great Gift Ideas for Astronomy Lovers
Need gift ideas for that astronomer in your life? Here are a few suggestions for some truly cosmic presents that will bring them the stars, planets, and galaxies!

Learn more about Comets and their History
Comets date back to the birth of the Sun, Moon, and planets, making them a treasury of information about the early history of the solar system.

Earth's Bigger, Older Planetary Cousin
The Kepler space telescope has found evidence of a planet that is about the same size as Earth is, and orbits in the habitable zone of a Sun-like star.

The Effects of Solar Storms
The Sun goes through an 11-year cycle of solar activity which can affect life and technology here on Earth. Learn more the about solar storms that result.

The World's First Artificial Satellite
The world was shocked on October 4, 1957, when the USSR launched the first artificial satellite, Sputnik 1. Learn more about this important space mission.

Aristarchus of Samos Biography
Early Greek astronomers such as Aristarchus began humanity's attempts to learn more about the cosmos and our place in it.

A Quick Tour of Jupiter's Moons
A quick tour of the planet Jupiter's four largest moons: Io, Europa, Callisto, and Ganymede shows us worlds of fire and ice.

Astronomy 101 - Solar System - Sun - Lesson 8: Visiting Close to Home
Learn about the Sun in our Astronomy 101 lesson about the solar system. It's a prelude to exploring the objects that make up our neighborhood in space.

Challenger Missions
In 1982, the Challenger rolled off the assembly line as the second space shuttle of the US fleet. The Challenger flew nine successful missions before that fateful day of the disaster in 1986. In 1991, the shuttle Endeavour joined the fleet to replace the Challenger, again bringing the number of ships to four. Discover the missions of the Space Shuttle Challenger.

Pioneer Moon Missions
The early Pioneer missions marked America's first efforts to break the grip of Earth's gravity and make it to the Moon. While only Pioneer 4 achieved that goal, all eight Pioneer moon shots yielded valuable information that shaped the later successes of the American space program. The program - a cornerstone of the U.S.

Space Basics
Discover what you need to know about astronomy. This basic astronomy information answers frequently asked questions about astronomy and provide definitions and history.

Space Shuttle Missions
NASA's Space Shuttle program was begun in the 1970s, to create reusable craft for transporting cargo into space. The first space shuttle, Columbia was launched in 1981. One year later, the Challenger rolled off the assembly line. They were followed by Discovery in 1983 and Atlantis in 1985. In 1991, the space shuttle Endeavour joined the fleet to replace the Challenger.

Basics of Astronomy and Space Exploration
Get started in your studies of astronomy and space with the basic infomational references.

Viking Missions
The Viking Mars mission was performed by two spacecraft, Viking 1 and Viking 2, launched within a couple of weeks of each other. Each spacecraft consisted of an orbiter and a lander, which traveled attached together for nearly a year to reach Mars orbit. The orbiters then began taking pictures of the Martian surface, from which a landing site was selected.

Voyager Missions
Both Voyager spacecraft carry a greeting to any form of life. The message is on a 12-inch gold-plated copper disk (right) containing sounds and images that portray the diversity of life and culture on Earth. One of the musical selections on the Voyager gold record is Chuck Berry's 1950s hit.

The History of Astronomy & Space Exploration - Timeline
The 20th century was filled with space and astronomy exploration. This timeline hits the high points and provides useful links for further reading.

Pluto as You've Never Seen It!
New Horizons images of Pluto continue to dazzle scientists with weird landscapes and interesting ice textures. Next job: explain why it looks like it does.

The Universe is Slowly Dying
Light from distant galaxies and observed by a collection of observatories holds clues to explain why the universe is dimming and slowly dying.

Hubble Studies Giant Gas Bubbles Near our Galaxy's Core
Something big and energetic happened to our galaxy back millions of years ago when humans were just learning to stand upright. Find out what it was.

What Happens When Neutron Stars Collide?
The universe is filled with collisions and explosions. A merger of neutron stars gives you both! Check out this story from the frontiers of astronomy.

The Life and Times of Scott Carpenter
Astronaut Scott Carpenter explored space and the undersea world during his career. He was part of the original Mercury 7 who flew missions from 1961-63.

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Hints for Stargazing Throughout the Year
Embark on a year-long exploration of selected sky observing highlights. Learn how to find constellations, special stars, nebulae, and galaxies!

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Take a Spacey Vacation Here on Earth!
Take a vacation to the stars by visiting these five amazing space places across the United States. Each one has a place in space history.

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These resources are for students, young and old, as well as parents and teachers.
These resources are for students, young and old, as well as parents and teachers.

Speak Like an Astronomer
A discussion about some of the language that astronomers and space scientists use. The terminology helps describe the universe they study.

Is Star Trek Science Fiction or a Look Into the Future?
Can the technologies we see used in Star Trek and other science fiction ever be developed? What's real? Let's take a look at the Star Trek universe.

The Search for Extrasolar Planets Goes Hollywood
A look at the science fiction planet Vulcan and its real-life parent star, 40 Eridani A. It was Spock's homeworld in the Star Trek TV shows and movies.

Activities for Kids: Astronomy and Space Related
Discover fun and exciting activities for kids of all ages dealing with astronomy and space exploration.

Galaxies Experience Winds of Change
Galaxies may be large and stuffed with stars, but they can also be shaped by cosmic winds that tear apart the clouds of gas and dust they need to form stars.

Visiting the NASA Goddard Space Flight Center
Visit the NASA Goddard Space Flight Center to learn more about how this center explores Earth, the solar system and out to the stars and galaxies.

Apollo 11 Mission - First Humans on the Moon
In July 1969 the first humans landed on the Moon during the Apollo 11 mission. Learn more about this event and the people who made it possible.

Viking 1 and Viking 2 Missions
The Viking missions traveled to Mars and sent landers to the surface of the planet to sample the soil and sniff the atmosphere. They relayed information to Earth via two orbiters and sent back the first highly detailed images of the surface.

Dark Matter and a Distant Supernova Make an Eerie Cross
Light from a distant supernova helped astronomers detect the effects of dark matter's gravity on the light from a long-ago explosion in a galaxy far, far away.

November Stargazing Sights
Looking for some stargazing activity for November? This article gives pointers to some great starry sights.

Meet the Seven Celestial Sisters of the Sky
Let's explore the Pleiades -- a cluster everyone on Earth can see! They're visible starting in October and stay up in the sky until springtime.

Mars Curiosity Rover is Uncovering Martian History
A look at the Mars Curiosity Rover's mission on the surface of the Red Planet. The rover has been traversing a region inside a crater since 2012.

What is the Cosmological Constant?
Albert Einstein came up with the cosmological constant to solve a problem in cosmology. Now, a new version might help explain a mystery in astronomy.

Astronomy Basics
Discover what you need to know about astronomy. This basic astronomy information answers frequently asked questions about astronomy and provide definitions and history.

Science on the International Space Station
The International Space Station is a science lab, with round-the-clock experiments being done.

What's Next for ISS?
The future of the International Space Station.

What is ISS and How Astronauts Get There
The International Space Station is a busy, working, thriving science lab in space. It has a permanent human presence of astronauts and scientists.

How Was ISS Built?
How the International Space Station was built.

What is it Like to Live and Work on ISS?
Living and working on the International Space Station.

Getting Started in Astronomy: Five Ways
Want to start learning astronomy? There are books, software, TV shows, movies, and a visit to your local planetarium or science center available to you!

Ancient Mars Rocks Show Evidence of Water
Images of rocks on Mars tell a story of ancient lakes, oceans, ponds, and rivers.Where did Mars water go? Is there any left? Mars rovers tell the tale!

Apollo 11:Landing a Man on the Moon
A short retrospective about the Apollo 11 mission and what its accomplishments have taught us about the Moon and space exploration in general.

10 Facts About the Solar System
The solar system is filled with surprising and interesting worlds. The top ten facts about our place in space help us understand more about it.

Try Your Luck at Observing Meteor Showers
Dates of meteor showers throughout the year.

How Meteor Showers Work
What are meteor showers are and why do we see them? Think of them as a short-term bombardment of Earth with tiny particles from space!

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Water in Space: It Exists around Young, Active Stars!
As astronomers study how our solar system formed and where our planet's water came from, they look to young stars with protoplanetary disks for answers.

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The New Solar System: What We Know about It
This isn't our parents' solar system anymore. Our views of the Sun, planets, moons, rings, asteroids, and comets have changed with new discoveries.

Learn about NASA's Orion Spacecraft
How will NASA astronauts get to space in the future? The answer: the Orion capsule, now being tested. It will go to low-Earth orbit, the Moon, and beyond.

Stars - Profiles of Stars
Stars are massive shining spheres of hot gas, the closest of which is our Sun. Those stars which you see with your naked eye in the night sky all belong to the Milky Way Galaxy, the huge system of stars that contains our solar system. Learn more about stars with these resources.

Have a Star Party, Explore the Universe
Have a star part with friends and family! It'll broaden your universe and clue you in on some very fascinating objects in the cosmos!

Radio Telescope Peers Into the Heart of our Galaxy
Intense magnetic fields surround the huge black hole in the core of the Milky Way. Astronomers map them using an Earth-sized radio telescope array.

New Horizons in the Outer Solar System
New Horizons is a grand piano-sized spacecraft carrying sensitive instruments on a one-way journey out of the solar system. It visited Pluto in 2015.

Space Weather and Envorinmental Issues - Sites Dealing with Space Weather and Envorinmental Issues
Sites dealing with space weather and environmental issues. These include space weather history and pictures dealing with space weather.

Astronomy and Space Blogs
Here, we'll take a look at your Guides favorite Blogs dealing with astronomy and space.

Events and Calendars in Astronomy and Space
Find the latest news and events in the world of astronomy and space exploration. Learn more about recent discoveries by astronomers and space personnel. Find calendars and information on wordly and space events. Discover amazing astronomy facts and figures on space exploration.

Neptune - Information on Neptune
Like its neighbor, Uranus, Neptune is believed to have a rocky core (about the mass of Earth), surrounded by a huge ocean of water mixed with rocky material. Its atmosphere is mostly hydrogen and helium with a small amount of methane. Neptune is visible with binoculars (if you know exactly where to look) but a large telescope is required to see anything other than a very small dot.

Five Solar System Secrets Revealed
What's up underground on Titan? Aquifers feeding surface lakes and rivers, that's what!

Five Solar System Secrets Revealed
Saturn's F Ring is the birthplace and destroyer of mini-moons that come and go over short timescales.

Five Solar System Secrets Revealed
A mysterious moon with an ocean under an icy crust, and it has Earth-like processes that change its surface.

Five Solar System Secrets Revealed
The Rosetta mission is the first to orbit a comet and send a lander to its surface.

Five Solar System Secrets Revealed
As astronomers explore the solar system, they're learning more about the many objects it contains -- and solving more than a few mysteries!

What Are Solstices and Equinoxes?
The solstices and equinoxes are events that occur twice a year as the Sun's apparent position in the sky changes as seen from Earth.

The Kuiper Belt: Our Solar System's Deep Freeze
The Kuiper Belt is the third zone of the solar system -- and a distant region that is only now being explored by a spacecraft passing through.

Investigating Space Tragedies
What happens when there's a space accident? NASA, Roscosmos, ESA, and all space agencies have procedures in place to investigate and understand mishaps.

The Future of Human Space Exploration
A look at the future of human space exploration and where it might take people in the future as more countries gain access to space.

Mercury Messenger Takes its Final Plunge
The MESSENGER mission was NASA's most spectacular mission to Mercury. It mapped the surface and solved mysteries about this tiny world.

Science Highlights from MESSENGER at Mercury
MESSENGER made important discoveries at Mercury, including the existence of ice at its poles.

Asteroids and Minor Planets
The Asteroid Belt stretches between Mars and Jupiter, containing a large number of small or minor rocky asteroids. Outside the orbit of Neptune is the Kuyper Belt, another area of our solar system containing asteroids. Some asteroids also orbit outside the

Would You Like to be An Astronomer?
A general look at astronomers, what they need to know and what they use to explore the stars, planets, and galaxies.

Who Was Yuri Gagarin?
A tribute to the first man to fly in space representing the old Soviet Union. Each year, people around the world celebrate Yuri's Night in his honor.

Astronomy 101: Starry Eyed? Try Star Gazing
Astronomy 101's lesson in how to stargaze and what you need to explore the starry skies from the comfort of your own backyard.

Free Sky Maps - Cities Around The World
Finding a night sky chart for your location is as easy as clicking on one of the cities listed in this article. You

Free Sky Maps - Cities Around The World - Find Your Nearest City to Create a Free Sky Map
You can view free sky maps as seen from various cities around the globe. Your Guide offers this online planetarium which gives you three ways to view the sky and produce free sky maps. Page 2.

Apollo 4 - NASA's First All Up Test
Apollo 4 was the first full test of the Apollo mission sequence. It was unmanned and tested hardware and safety technology for future missions.

Find pictures of Jupiter.
Find pictures of Jupiter. Space/Astronomy.

Uranus - Information on Uranus
Scientists classify Uranus as a Jovian planet or gas giant. It has a rocky core, surrounded by a huge ocean of water mixed with rocky material. Its atmosphere is about 83% hydrogen, 15% helium and 2% methane. While most other plantes rotate on an axis which is nearly perpendicular to their orbit, Uranus's axis is closer to parallel. There is some debate as to which pole is north.

Astronomy 101: Exploring the Outer Solar System
Learn more about the worlds of the outer solar system in our Astronomy 101 series, exploring the stars, planets, and galaxies.

The Andromeda Galaxy: Nearest Spiral to the Milky Way
The Andromeda Galaxy is the closest spiral galaxy to the Milky Way and is on a possible collision course with our own galaxy in a few billion years.

William Herschel: the Man Who Discovered Uranus
William Herschel was an accomplished astronomer and musician. He focused his work on charting double stars and is best known for discovering planet Uranus.

What is Dark Energy?
Our understanding of the universe is challenged by new discoveries showing that the expansion of the universe is accelerating, which was unexpected.

Opportunity Mars Rover Mission Information
The Opportunity rover is the longest-lived rover on planet Mars. It landed in January 2004 and its 12-year mission continues.

The Surveyor 1 Lunar Mission
After the success of the Ranger program, NASA built and sent the Surveyor missions, programmed to do soft landings on the lunar surface.

Becoming a Black Hole - Exploring the Mass Limits of Stellar Evolution
How do black holes form? Look to massive stars for one way how these mysterious massive objects form. Look to the hearts of galaxies for another.

Biographies of Astronauts, Cosmonauts, and Astronomers
Learn more about the people who have shaped our views of the universe, from ancient to modern astronomers, astronauts to cosmonauts.

Rocketry Biographies
Discover the people who have left their mark on the history of rocketry.

The Mysterious Dark Vortices of Neptune
Dark spots abound on ice giant Neptune as planetary scientists observe them and try to explain their origins and why they eventually disappear.

You Can See Remnants of Halley's Comet
Comet Halley's presence is still felt each year during the Orionids Meteor shower, which occurs in the second half of October. Learn more about it here.

Astronomy 101 - Big Numbers - Lesson 4: It's A Big Universe
Astronomy 101 - Lesson 4 - Big Numbers For a Big Universe. This lesson takes a look at the methods that astronomers use to measure the cosmos.

How Do Black Holes Eat?
Astronomers study the eating habits of supermassive black holes using radio telescopes and find out more about how these monsters affect their host galaxies.

Astronomer Biographies - Discover Astronomer Biographies
Want to learn about the life of an astronomer? You've come to the right place. Read our astronomer biographies about people who have changed our view of the universe over the centuries. Find a biography of an ancient astronomer, a modern astrophysicist and everything in between. Study an astronomer today.

Pythagoras of Samos Biography
Pythagoras was a mathematician and astronomer whose works we still learn today. His work helped build the foundation of modern math and science.

Meteors - Meteorites - Meteoroids - Shooting Stars - Falling Stars
Shooting stars (meteors) are bits of material falling through Earth's atmosphere; heated to incandescence by the friction of the air. The bright trails as they are coming through the Earth's atmosphere are termed meteors, & these chunks as they are hurtling through space are called meteoroids. Large pieces that do not vaporize completely & reach the surface of the Earth are termed meteorites.

Meteor Showers
Discover the world of falling stars. Learn more about meteor showers and shooting stars.

Hans Lippershey - Biography of Telescope Inventor
Hans Lippershey is usually credited with inventing the telescope. He did a lot of development work that led to its widespread use and applied for a patent.

Binary Stars
About third of the stars in the Milky Way are known to be in binary systems, where two stars orbit a common center of mass.

Astronomy 101 - Learning About Stars
Astronomy 101 - Learning About Stars - Lesson 5: The Universe Has Gas - So, Where Do Stars Come From and Where Will They Go?

Radiation in Space and Astronomy - Definition
It is a term that seems to be used for many applications: light, nuclear danger, medical imaging and more. So what is radiation exactly?

Interacting Galaxies - Galaxy Mergers and Collisions
When galaxies cluster together and interact, interesting things can happen that affect their shapes and the stars they contain. Let's find out more!