NASA had to put spacewalks on hold and defer other duties after an unidentified astronaut experienced a serious medical issue in January.

Celebrating the lasting legacy of our planet's off-world laboratory since it was first inserted into orbit in 2000, NOVA presents a two-part exploration of the venerable International Space Station ...

CAPE CANAVERAL, Fla. (AP) — The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another star. NASA and the European Space Agency released ...

The five-part series premieres Wednesday, September 17, at 9pm ET/8C on PBS, and will also be available for streaming at pbs.org/nova, NOVA on YouTube, and the PBS ...