After completing 193 days in space as a member of the Expedition 30 and 31 crews, astronaut Don Pettit returned…
Caption: The integrated vehicle stack for a deep space human mission concept. Credit: NASA There are all sorts of details…
Caption: Artist's impression of debris in low earth orbit Credit: ESA Space may be big -- vastly, hugely, mind-bogglingly big…
Image Caption: Divalia Fossa equatorial trough at Vesta pictured in side by side images showing apparent brightness and topography. The…
This quick animation made by astrophotographer Alan Friedman shows a 30-minute view of sunspot 1520, a large region of magnetic…
Caption: Richard Branson at the Farnborough International Airshow showing a model of LauncherOne. Credit: Virgin Galactic. Virgin Galactic’s latest venture…
They're out there; tiny, extremely faint and incredibly ancient dwarf galaxies with so few stars that scientists call them 'ghost…
This just in! Astronomers working with the Hubble Space Telescope have spotted a new moon around distant Pluto, bringing the…
Caption: This deep image shows the region of the sky around the quasar HE0109-3518, near the center of the image.…
As our closest neighbor in space, a time-capsule of planetary evolution and the only world outside of Earth that humans…