Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
On the 25th anniversary, a look back at the tragic space mission that transformed NASA.
Part 2 of a series exploring the cosmos from the perspective of Vatican astronomers.
NASA marks multiple tragedies this week with a special Web telecast commemorating Apollo 1, Challenger and Columbia.
Satellite's mission is to test use of solar sails in space as power alternatives for low-orbit space craft.
Part 1 of a series exploring the cosmos from the perspective of Vatican astronomers.
NASA has officially set a launch date for the STS-135 mission of shuttle Atlantis, the very last space shuttle flight before it's retired.
The replacement of an astronaut puts the spotlight on the physical challenges of working outside in space.
Venus, second planet to the sun, is named for the Roman goddess of beauty and love. While eerily beautiful, the surface of Venus is as hostile as the deepest recesses of space.
The 235-foot rocket carries a spy satellite for a classified mission from the U.S. National Reconnaissance Office.
Atlantis's launch will be NASA's 135th and final shuttle mission into space.
The Stardust-NExT spacecraft will be rapidly snapping pictures of the Tempel 1 comet as they pass at a mere distance of 124 miles.
The six-week pilot project, called "Mission X: Train Like an Astronaut" aims to teach healthy eating and exercise habits to children.
New telescope called SOFIA, which is actually a modified 747 jet, releases photographs from its first science mission.
New journal looks at sex on Mars and questions why NASA is so silent on the subject.
Each full moon has its own name that comes from the names given to the lunar events by Native Americans.
Eco-entrepreneur on politics, energy and Earth's resources.
Russell blogs about the day's top science and eco-news.