Guide to some of the sights and characters of the Sochi opening ceremony.
NASA's next-generation telescopes will be better able to scan the cosmos for signatures of life on habitable worlds. But alien life doesn't necessarily mean intelligent – or even multicellular – beings.
Detecting evidence of life outside our solar system will probably require a telescope even larger than the next-generation James Webb space telescope, scientists say.
NASA's Hubble Space Telescop has captured imaged of a 100,000-light-year-long string of star clusters wrapping around the cores of two merging galaxies.
In July 2015, NASA's New Horizon's spacecraft is set to offer the best look yet at Pluto, which astronomers reclassified in 2006 as a 'dwarf planet.'
Gravity data gathered by NASA's Cassini probe suggests that the subsurface ocean of Saturn's largest moon, Titan, has a remarkably high concentration of dissolved salts.
For its "grand finale," the Cassini space probe will orbit between Saturn and its innermost ring, before plunging itself into the gas giant's atmosphere.
NASA successfully launched a saucer-shaped space craft designed to prevent crash landings on Mars during test off the coast of Hawaiian island of Kauai.
A NASA landing system that looks like a flying saucer was successfully tested over the Pacific Ocean Saturday.
Curiosity rover: Having spent 687 days on the Red Planet, NASA's Curiosity rover has completed one lap around the sun on Mars.
A feature in a northern sea on Titan appeared suddenly before disappearing again. Researchers attribute this phenomenon to the shifting seasons on Saturn's moon.