Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
The shuttle program's lasting legacy will be the International Space Station, says astronauts.
For the past 50 years, we have been able to explore our planet's only natural satellite as never before. Check out these ten amazing photos of the moon.
Clouds of methane ice crystals are found hovering over Neptune's northern and southern hemispheres.
Rachel Hobson won a contest last fall sponsored by NASA and Etsy with her depiction of the moon's surface.
Comet 'evaporated away completely' as it approached the sun.
Elimination of the telescope — the successor to Hubble — is seen as a setback by scientists seeking to understand the universe.
Video: Author Ben Mezrich, author of 'Bringing Down the House' and the book behind 'The Social Network,' talks about his new book 'Sex on the Moon,' the amazing story a NASA intern. Thad Roberts stole 17 lbs. of a safe full of moon rocks from NASA.
The final shuttle mission before the U.S. program formally ends after 30 years will now last 13 days, returning to Earth on July 21.
The shuttle delivered a number of experiments, including the Robotic Refueling Mission, a system for performing robotic maintenance of satellites.
More than 22,000 pieces of space junk are constantly being tracked in Earth orbit.
Celebrities of widely varying star power are coming out to witness the launch of the space shuttle Atlantis — the last one ever for NASA's storied shuttle program.
NASA's storied shuttle program begins its swan song with a stunning midday launch by Atlantis from Cape Canaveral, Fla.
Tweeting guests will meet agency officials and receive a tour of the Kennedy Space Center.
Space shuttle workers at NASA's Kennedy Space Center are preparing to say a sad goodbye to the three shuttle orbiters as they retire to museums.
Video: Watch NASA's coverage of space shuttle Atlantis lifting off from Cape Canaveral, Fla.
Eco-entrepreneur on politics, energy and Earth's resources.
Russell blogs about the day's top science and eco-news.