The first flight of NASA's next-generation heavy-lift rocket, the Space Launch System (SLS), is now scheduled for 2019 and will not include a human crew, agency officials said today (May 12).
The record-shattering mission of the U.S. Air Force's robotic X-37B space plane is finally over.
Running low on fuel, NASA's Cassini spacecraft has begun the final (and most daring) phase of its epic mission to Saturn.
Currently orbiting Earth as commander of the International Space Station, Whitson on Monday (April 24) flew past the record for the most days in space by an American.
Saturn's icy moon Enceladus is looking more and more like a habitable world.
Three space fliers have safely touched down on Earth after almost six months aboard the International Space Station.
Bright auroras light up the planet's atmosphere in two newly released photos, which combine observations by NASA's Hubble Space Telescope and the agency's Voyager 2 probe.
A nearly 20-year-old satellite that's watched Earth for two decades, Meteosat-7, is retiring to a perch even higher in the sky — a so-called "graveyard orbit" high above the Earth that puts out-of-commission satellites out of harm's way.