Space Exploration

SpaceX's trailblazing Polaris Dawn mission will make a daring trek into Earth orbit, one that will ferry the crew through belts of radiation wrapped around our planet.

Organisms on Earth living deep underground or at the bottom of the sea may give us an idea what alien life without a circadian rhythm could be like.

"It's now a part of mainstream astrophysics."

The Polaris Dawn mission is currently scheduled to launch on Tuesday, Sept. 10. Liftoff is scheduled for 3:38 a.m. EDT (0738 GMT) from Florida's Cape Canaveral.

SpaceX is targeting Sept. 10 for the launch of its Polaris Dawn mission, which will feature the first-ever private spacewalk. Here's how you can watch the historic action live.

SpaceX's private Polaris Dawn mission is poised to launch a crew of private astronauts farther from Earth than any human has flown since Apollo 17.

SpaceX plans to start launching uncrewed Mars missions with its Starship megarocket in 2026 and crewed flights to the Red Planet two years after that, Elon Musk said.

Starliner's recently completed Crew Flight Test mission faced several technical problems in space. Will NASA certify the spacecraft for long-duration astronaut flights?

Boeing moving toward a June 1 launch of its first-ever Starliner astronaut mission for NASA.

Boeing's Starliner capsule returned to Earth early this morning (Sept. 7), wrapping up its first-ever crewed mission. But it came home without any astronauts on board.