NASA's Mars rover Opportunity is studying the area of contact between a rock layer formed in acidic wet conditions long ago and an even older one
There is only one planet we know of, so far, that is drenched with life. That planet is Earth
Astronomers have detected the first population of radio bursts known to originate from galaxies beyond our own Milky Way.
This image from NASA's Galaxy Evolution Explorer shows NGC 6744, one of the galaxies most similar to our Milky Way in the local universe.
Data from Voyager 1, now more than 11 billion miles (18 billion kilometers) from the sun... is closer to becoming the first human-made object to reach interstellar space.
More than 10,000 asteroids and comets that can pass near Earth have now been discovered.
NASA's Hubble Space Telescope will have two opportunities in the next few years to hunt for Earth-sized planets
The radar imagery revealed that 1998 QE2 is a binary asteroid.
Because of GRAIL's findings, spacecraft on missions to other celestial bodies can navigate with greater precision in the future.
Mars rover, Opportunity, is driving to a new study area after a dramatic finish to 20 months on "Cape York" with examination of a rock intensely altered by water.
Apparently even NASA can't avoid the zombie craze: the agency announced their selection of programs for launch in 2017
Astronomers have spotted the most distant massive star explosion of its kind, a supernova that could help scientists better understand the nature of the universe.
We were too far away to try to stop it. All we could do is watch, helpless, horrified, and secretly delighted, as the event unfolded beyond our reach.
An analysis of a rock sample collected by NASA's Curiosity rover shows ancient Mars could have supported living microbes.
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