Sierra Space, the company behind the in-development Dream Chaser spaceplane, announced a technology center expansion that will allow it to scale its solar power systems manufacturing. The $45 ...

NASA's new "CODEX" telescope has snapped its first photos of the sun's outer atmosphere, revealing previously imperceptible changes that could help scientists better predict potentially dangerous ...

UPDATE for 11 a.m. ET: Blue Origin has successfully launched 6 passengers to space an back on NS-33. See our full wrap story ...

NASA astronaut Don Pettit, an energetic tinkerer and photographer, used his off-duty time on the International Space Station ...

Man gored by bison in Yellowstone National Park after getting too close, ... SpaceX's Crew Dragon Grace brought a privately-financed crew of researchers to the space station for a two-week stay.