An enormous gas cloud in the early universe has a very small amount of the heavy elements that would form in later stellar generations, suggesting that it was "polluted" by the very first stars.
Europe's Rosetta spacecraft has spotted big grains of water ice on the surface of Comet 67P/Churyumov-Gerasimenko; the grains may have formed after heat from the sun vaporized buried water ice, which then recondensed and was redeposited.
The ExoMars program consists of two missions. The first – an Orbiter + Entry, Descent and Landing Demonstrator – is slated to launch in March 2016. Both will carry science payloads.
Known simply as 'Gravity', this multi-mode interferometer combines light from several telescopes to enable observations simulating a single extremely large telescope.
The images were captured last month by NASA's Dawn spacecraft from a distance of just 240 miles (385 kilometers) — the final and closest of a series of orbits for the probe, which has been circling Ceres since March 2015.
Last month, the private spaceflight company SpaceX achieved an amazing feat: launching a rocket into space, and then landing it back on Earth in a history-making moment.
Passing dark matter may have caused small quakes in the Milky Way galaxy, creating ripples that scientists can use to study the properties of dark matter, according to new research.
Speaking before a joint session of Congress for the eighth and final time of his administration, Obama raised the nation's competition with the former Soviet Union as he wondered how to reignite America's spirit of innovation.
Over 4200 light-years away, this cosmic butterfly takes an odd two-lobed shape.
The universe may be a pretty empty place, but it's peppered with a whole heck of a lot of light.
Experience low gravity on Earth just by donning a pair of shoes.
Among real space explorers, few songs have resonated as powerfully as David Bowie’s iconic 'Space Oddity.'
In the roller-coaster rumor mill that surrounds some of the biggest physics endeavors of our time, it pays to remain skeptical when extraordinary claims of historic discoveries are made on social media.
The Philip K. Dick Science Fiction Film Festival returns to New York City this Thursday through Sunday (Jan. 14-17).
