NASA astronaut Bruce McCandless became the first person to go on a spacewalk without a tether. McCandless was wearing a type ...

Suni Williams conducted a record-breaking spacewalk outside the ISS. An amateur astrophotographer photographed her from Earth.

NASA and SpaceX are addressing a scheduling conflict to return stranded astronauts Sunita Williams and Butch Willmore from ...

SpaceX is having issues with the batteries of the newly christened Dragon spacecraft forcing it look for new options.

Seeing the process in action is almost magical, but it works by using the effects the plasma has on the air against itself.