Earth's Upper Atmosphere is Cooling

Cassini Captures Sunshine Gleaming off Lake on Titan

Earth's Atmosphere Came from Outer Space

Soyuz Blasts off with International Crew to build out ISS

Asteroid Detection, Deflection Needs More Money, Report Says

STS 130 flight pressing forward to launch as NASA resolves coolant hose leak

More Saturn System Beauty from Cassini

New Pulsar "Clocks" Will Aid Gravitational Wave Detection

Opportunity's Vacation at Marquette Island

How Common are Solar Systems Like Ours?

NASA’s Solar Crown Jewel Bolted atop Atlas Rocket

New Recipe for Dwarf Galaxies: Start with Leftover Gas

If Phoenix Arises, Science could flow quickly

Latest Buzz: NASA to Get Bigger Budget and New Launcher

Odyssey to Start Listening for Phoenix Lander

President Can't Cut Constellation Without Congressional Approval

Exoplanet Not Really There?

Scientists Find Water Ice Creates the Spokes in Saturn's B Ring

Russia May Head Mission to Deflect Asteroid Apophis

Latest from Hubble: Star Formation Fizzling Out in Nearby Galaxy

ISS Now Has Live Access to the Internet

Remembering Challenger

Maps of Earthquake and Aftershocks in Haiti

Having Your Own Space Shuttle Just Got Cheaper

End of Shuttle Program Will Slow Florida's Economy

NASA Unveils Personal Aircraft

Solar Flares Can Now Be Predicted More Accurately

Endeavour aiming for on time launch with coolant hose fix ahead of schedule

Hubble Finds Smallest Kuiper Belt Object Ever Seen

NASA advanced Solar Observatory nearing February launch; will send IMAX like movies daily

NASA's Bargain Basement Artifact Sale

Obama and Bolden Meet. So What Happened?

Scientist Discusses Latest Report of Rising Global Temperatures

Kepler Goes Fishing and Reels in Two KOI

Where is NASA Going? Rumors Fly

WISE Bags its First Near-Earth Asteroid

Engineers Find Fixes For Potential Thrust Oscillation Problem on Ares

Cluster Satellite Detects Rifts in Earth's Magnetic Field

Blue Stragglers Can Be Either Vampires or Stellar Bad-Boys

May Visions of Saturn's Moons Dance in Your Head

New Horizons Spacecraft Now Closer to Pluto Than Earth

Giant Iceberg Still Heading for Australia (Satellite Images)

Where To Next for NASA's Solar System Exploration?

Fermi Spies Energetic Blazar Flare

Controversial Image from SkyAlert Hints at Multiple Santas in the Early Universe

Sailing the Seas of Titan

ISS “Iron Chef” Recalls Holiday Cooking in Space

Path clear for STS 130 to attach Tranquility module

Could Mars Dust Be "Levitated" Away?

Cocaine Found In Shuttle Processing Facility

Searching for Moon Rocks Here on Earth

Moon Rock Will Return to Space Aboard Endeavour

Stellar Destruction Could Be from Intermediate Black Hole

Opinion: Ares I-X Test Flight is Go For Oct. 27 (Video)

Opinion: NASA Weighing Debris Hit Risk for Hubble Repair Mission

Podcast: Universe Today - Best Spot for a Lunar Base

Podcast: Universe Today - Gravity Tractor Beam for Asteroids

Podcast: Universe Today - Homing Beacon for an Asteroid

Podcast: Universe Today - Interview with Story Musgrave

Podcast: Universe Today - NASA Tests a Solar Sail

Remembering Challenger

Opinion: Going In Circles Again: America Will Abandon Human Lunar Exploration - And Much More

Kepler Goes Fishing and Reels in Two KOI

Path clear for STS 130 to attach Tranquility module

Could Mars Dust Be "Levitated" Away?

NASA Cues Up University CubeSats for Glory Launch This Fall