The Air Force says that the almost one-of-a-kind spacecraft "conducted on-orbit experiments" in the the longest-ever mission for the X-37B program.
The water in our solar system -- including up to half of Earth's supply -- has actually been here since before the birth of the sun, according to new research.
Get your relaxing Internet fix by sitting back and watching the Blue Marble roll away in real-time under the orbit of the ISS.
Using tech known as lidar, a device will map forests in 3D and increase understanding of their role in the carbon cycle.
Astronomers have mapped the Milky Way's position to the outskirts of a supercluster of galaxies, newly dubbed Laniakea, meaning "Immense Heaven".
A fascinating NASA presentation suggests that in July 2012 Earth was one week away from being struck by a massive solar storm that would have had devastating effects. Can this be?
Satellite Landsat 8 has been surveying Earth for over a year now, providing an interesting take on our planet's shifts.
A user posts a fake news piece to CNN's iReport news hub. It stays live for 22 hours before someone realizes it must surely not be true.
Some suns gobble up the planets revolving around them, creating unique chemical signatures that could help astronomers in their planetary hunt.
Identifying distant planets that might be able to support life turns out not to be as straightforward as we might think, new research finds.