Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
STS-135 will be Atlantis' 33rd and final mission before it is retired.
Scientists were relieved to see the space shuttle Endeavour's prize payload — the $2 billion Alpha Magnetic Spectrometer — safely installed on the International Space Station
Giffords' rapid recovery is 'almost miraculous.'
On top of his busy day in space today, space shuttle Endeavour commander Mark Kelly must juggle the knowledge that his wife, Congresswoman Gabrielle Giffords, is undergoing brain surgery.
People on Earth can vote on what piece to move, but the United States Chess Federation ultimately makes the decision.
Rogue planets most likely broke away from their host stars at an early stage.
NASA's shuttle Endeavour and the International Space Station are visible to skywatchers during their mission.
Satellite will measure the amount of salt in Earth's oceans to help scientists determine the nature of heat and water in the atmosphere.
Airline passenger Stefanie Gordon captured amazing photos of space shuttle Endeavour's launch through the window of her plane.
It's a tradition for shuttle and space station astronauts to make mission posters based on popular films.
Here's a look at NASA's newest orbiter's career by the numbers.
Engineers who worked on the construction of the space shuttle Endeavour eminisce about what it was like to be a part of the space shuttle program.
Video: Commanded by astronaut Mark Kelly, the husband of wounded congresswoman Gabrielle Giffords, the shuttle Endeavour embarks on its final journey into space before being retired.
While Gliese 581d shows potential, it would take around 300,000 years to get there with current space traveling technology.
Endeavour's launch marks the second-to-last space shuttle launch for NASA.
Eco-entrepreneur on politics, energy and Earth's resources.
Russell blogs about the day's top science and eco-news.