NASA

A NASA astronaut — who was not identified — was kept for observation for an unspecified medical issue after landing Friday.

Three NASA astronauts and a Russian cosmonaut splashed down off the Florida coast early Friday, capping a nearly eight-month science and research mission to the International Space Station.

New spacesuits, untested astronauts, and a lot that can go wrong make this five-day mission unusually complex, but with a potentially great reward.

An empty Boeing Starliner is scheduled to return from the International Space Station in early September. It will fly home autonomously while its crew remains in space until February.

The Federal Aviation Administration opened the investigation after a rocket booster toppled aboard a drone ship after it was returning from lofting SpaceX's Starlink internet satellites into space.

Since the astronauts arrived at the space station in June, Boeing and NASA have been investigating issues on the Starliner spacecraft, including helium leaks and faulty thrusters.

Researchers estimate the cave is at least 130 feet wide and tens of yards long.

The space agency determined that the material was a metal alloy stanchion used on “NASA flight support equipment.”

NASA and other federal agencies recently did a tabletop simulation of an Earth-threatening asteroid to see how they'd handle it

After years of delay, Boeing's Starliner is flying people for the first time with two NASA astronauts heading to the International Space Station. The rocket lifted off from Cape Canaveral.

NASA is shifting the way the Hubble Space Telescope points. The change is a work-around for a piece of hardware that's become intolerably glitchy. Officials say Hubble will continue to do 'ground breaking science,' for about another decade.

Boeing is now aiming for its first astronaut launch at the beginning of June. Officials for the company and NASA said Friday that weeks of review show that the capsule can safely fly with two test pilots, despite a small propulsion system leak.