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Comet C/2013 A1 probably will not strike Mars in 2014
Previously, NASA's Jet Propulsion Laboratory said there was a 1 in 8,000 chance the comet would strike Mars. Now that chance has been reduced to 1 in 120,000.
April 15, 2013
Video: What happens if you cry in space?
Canadian astronaut Chris Hadfield, commander of the International Space Station, demonstrates what happens if you shed a tear in zero gravity.
April 15, 2013
As winter approaches, Titan’s south pole gets an ice cloud
The ice cloud above Titan's south pole can be seen only at infrared wavelengths. It means autumn is here, and winter is coming, for Titan's southern hemisphere.
April 12, 2013
April 11 solar flare strongest so far in 2013
Today's flare was associated with an Earth-directed CME. Most CMEs reach Earth in one to three days, making this a great weekend to watch for northern lights.
April 11, 2013
NASA image of April 11 mid-level solar flare
NASA's Solar Dynamics Observatory captured an image of an M6.5 class flare at 3:16 EDT on April 11, 2013.
April 11, 2013
Video: How NASA intends to capture an asteroid
Why capture an asteroid? It's something NASA wants to learn to do, in case astronomers someday find an asteroid on a collision course with Earth.
April 10, 2013
It’s raining from Saturn’s rings
Scientists believe that a rain of charged water particles from Saturn's icy rings flows into the planet's atmosphere.
April 10, 2013
Dying star blows off ghostly green bubble in space
Toward the end of its life, our own sun will go through a phase very much like the one pictured here.
April 10, 2013
Fusion rocket researchers envision 30-day trip to Mars
Will rockets powered by fusion eventually make interplanetary travel commonplace?
April 9, 2013
More great images in celebration of International Dark Sky Week
International Dark Sky Week is happening right now (April 5-11) . To celebrate, enjoy these fantastic pics - they make us say WOW. And post your own.
April 9, 2013
