A bus-size asteroid is racing through space on a trajectory that will bring it close to Earth, and NASA is watching it with the kind of precision that has turned near misses into routine science rather than cause for panic.

The SpaceX Crew-11 Dragon spacecraft splashed down this morning as four astronauts completed an unprecedented medical evacuation of the International Space Station (ISS).

Crew 11 is expected to splash down off the coast of Southern California at 3:41 a.m. EST, closing out a 167-day stay in space.

NASA has launched the Mars to Table Challenge, seeking Earth-independent food systems capable of sustaining astronauts on long-duration Moon and Mars missions.

The space rock is hurtling through our cosmic backyard at a zippy 26,200 miles per hour, according to the space agency.

SAN FRANCISCO – NASA’s Earth Science Division is exploring partnerships with external organizations to support instruments mounted on the International Space Station and free-flyer missions. Sign in by entering the code we sent to , or clicking the magic link in the email.

NASA has taken another step in expanding commercial spaceflight, confirming a fifth private astronaut mission to the International Space Station in partnership with Axiom Space. The mission, known as Axiom Mission 5,

An ailing astronaut is back on Earth. The crew of four returned Thursday, ending their space station mission more than a month early in NASA's first medical evacuation.

The members of Crew-11 — two American, one Russian and one Japanese — splashed down after one became ill, prompting an early return.

Scientists continue to mine data gathered by NASA's Kepler Space Telescope, retired in 2018, and continue to turn up surprises. A new paper reveals the latest: a possible rocky planet slightly larger than Earth,