Rivers of methane are likely flowing on Titan, Saturn's largest moon, according to observations made by the Huygens space probe, which landed on Titan in January.
Trading nuclear bombs for a gentler approach, NASA astronauts say a spacecraft could use a gravity "towline" to tug an asteroid from a collision course with Earth.
Astronomers are closing in on proof that a supermassive black hole sits at the center of our galaxy. If proven, the hole would be the densest object in the known universe.
New photographs from NASA's recent expedition to the International Space Station show Earth like you've never seen it, from a panorama of the Himalaya to a space-based postcard of Central Park.
The Hubble Space Telescope has detected large deposits of oxygen-rich minerals on the moon that could help astronauts and robots "live off the land," NASA scientists announced today.
See the stunning images that the Hubble Space Telescope has beamed back to Earth, learn how it works, and explore the discoveries it has made on its historic mission.
October 10 marks the 25th birthday of the Very Large Array, the most powerful radio telescope on Earth. See how it works, what it has discovered, and what its future holds.
The morning of Monday, October 3, 2005, sky-watchers in Africa and Europe witnessed a seldom seen annular eclipse, in which the moon passes in front of the sun to create a blazing ring in the sky.
