For a quarter of a century, humans have continuously occupied the International Space Station. Here's a look at how far we've ...

NASA has modified its ISS resupply contract with Sierra Space, which builds the robotic Dream Chaser space plane.

NASA and Sierra Space have modified the Commercial Resupply Services-2 contract, which originally called for the Dream Chaser spaceplane to be used to supply the International Space Station (ISS).

The ISS feels impossibly far at 250 miles up, but lunar missions go 240,000 miles out - over 1000x the distance. It's a ...

The new selection of NASA astronauts will spend two years in training before becoming eligible for flight assignments.

The space agency doesn't seem to save any money by outsourcing its missions to private companies, according to the analysis.

Discovery has been on display at the Smithsonian’s National Air and Space Museum for more than a decade. Now, Senators Ted ...

The widely parroted idea is that players in the free market will be able to operate more efficiently than NASA’s own stock of ...

NASA and Sierra Space have agreed to change their deal for its Dream Chaser spacecraft, which will now have its first launch ...