"The tops of this [upward directed lightning] are around 75-80km [47-50 miles], boarding on the fringes of space." ...

Astronauts aboard the ISS have captured an electrifying spectacle in Earth's upper atmosphere. A mysterious blue jet sprite and a gigantic lightning jet shot skyward, defying expectations. Scientists ...

After spending nine months in space, NASA astronauts Sunita Williams and Barry Wilmore will face significant physical ...

The SpaceX Crew Dragon was initially scheduled to return Astronauts Sunita Williams and Butch Wilmore by March 19, with NASA ...

NASA astronauts Suni Williams and Butch Wilmore at a press conference from the International Space Station on Sept. 13. (NASA via AP) ...

Four astronauts are gearing up to launch to the International Space Station on Wednesday. Their arrival will, at long last, kick off the process of bringing NASA astronauts Suni Williams and Butch ...

CAPE CANAVERAL, Fla. – After a weeklong trip turned into a nine-month stay aboard the International Space Station, NASA astronauts Suni Williams and Butch Wilmore are finally coming home.

An upcoming routine SpaceX mission to send a crew of astronauts to the International Space Station bears a little more significance this time around. When a mission known as Crew-10 launches as ...

A quick trip in June to the International Space Station stretched into an unexpectedly lengthy orbital stay for the two NASA astronauts who crewed the Boeing Starliner for a flight test.

The return date for NASA's stranded astronauts has changed again. NASA officials announced the pair are due back from the International Space Station (ISS) on March 16, about three days earlier ...