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The astronauts of the Polaris Dawn mission, after traveling through heavy radiation and high orbits, are getting ready to open the hatch of their SpaceX...

After launching early on Tuesday, the billionaire Jared Isaacman and his crew traveled to altitudes not visited by any astronaut since the Apollo moon missions...

A private mission, scheduled to launch at 3:38 a.m. Eastern time Tuesday after a series of delays, would take people farther from Earth than anyone...

The troubled spacecraft is scheduled to undock on Friday for a trip back to Earth while two NASA astronauts will stay in orbit.

Jared Isaacman is leading three other privately trained astronauts on a SpaceX vehicle for Polaris Dawn, a mission that will include a daring spacewalk.

The agency’s leaders are meeting on Saturday to decide whether Suni Williams and Butch Wilmore can safely fly home to Earth on the vehicle that...

The agency’s leaders are meeting on Saturday to decide whether Suni Williams and Butch Wilmore can safely fly home to Earth on the vehicle that...

After agency officials said last week that a decision was pending, they said on Wednesday that deliberations were still taking place.

The agency had insisted for a couple of months that it was confident that Suni Williams and Butch Wilmore would return on Starliner.

With the Falcon 9 rocket set to fly again, and testing of the Starliner capsule progressing, the agency is seeking to turn the page on...