Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
Museums are taking advantage of NASA's long decommission process to ready the space shuttles' new homes.
Twin galaxy is nearly twice the size of the Milky Way.
Space agency turns its attention to the last flight of NASA's storied space shuttle program.
Endeavour and its six-astronaut crew completed the 16-day STS-134 mission to the International Space Station, its 25th and final flight.
Video: Shuttle Endeavour touched down safely at the Kennedy Space Center early Wednesday morning, completing its final mission to space.
Spectacular photos show Endeavour at the space station over nighttime Earth.
Details of the three odd eclipses that occur in June and July.
The International Space Station may be complete, but the outpost's crew still has some assembly to do. NASA's shuttle Endeavour delivered a large LEGO space station for astronauts aboard to build.
Atlantis's final launch is also the final launch of the space shuttle program.
A shower of the mineral olivine is helping scientists understand why comets, which form in the outskirts of our solar system, contain the same type of crystals.
When a woman tries to clandestinely sell a purported moon rock, an undercover NASA agent is there.
When the unmanned spaceship, more formally known as Automated Transfer Vehicle 4, launches toward the space station in February 2013, it will carry Einstein's name.
When astronauts go spacewalking outside their spacecraft, they need the protection of a spacesuit, but sometimes with all that gear on, even the tiniest discomfort can be a big pain.
Former Apollo astronaut and moonwalker Harrison Schmitt calls for the replacement of NASA with a new National Space Exploration Administration (NSEA).
Infrared images revealed the buried structures.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.