Elizabeth Howell

NASA says the Artemis 2 rocket's engines have been mounted and other work is ongoing.

NASA wants to do extra checks after an International Space Station leak on the Russian side, postponing the first of two scheduled spacewalks for a second time as the coolant investigation continues.

Two of NASA's flagship space telescopes, Hubble and Chandra, may have less money to spend if budget predictions come through. NASA may reallocate funds to newer missions.

The Ax-3 mission is on track with its training, and the four commercial astronauts are excited for launch in early 2024, they told reporters during a briefing Oct. 16.

NASA astronaut Frank Rubio is safely back on Earth after an eventful year in space. He talked about the spacecraft leak that kept him stuck there and what he learned from his stay.

Two NASA astronauts will conduct an all-woman spacewalk on Oct. 30. While only one other crew has done so before, more such spacewalks will come, NASA says.

A 'ring of fire' or annular solar eclipse will sweep across the United States on Oct. 14, bringing incredible views and a lot of science at the same time.

NASA announced that Boeing's commercial crew vehicle, Starliner, will not carry astronauts in a test flight until at least April 2024. Its first operational flight is also delayed into 2025.

European Space Agency astronaut Andreas Mogensen was supposed to step into space Oct. 12. Now facing a delayed spacewalk, he said that was the right call.

New spacecraft footage from Mars Express shows off a rugged valley on the Red Planet, shaped by volcanic activity from the famous Tharsis region.

NASA has delayed a planned Oct. 12 spacewalk due to a leak of coolant from a Russian module discovered earlier this week. The cause of the leak remains under investigation.

A robotic free-flying robot from NASA is back in space after a year-long pit stop for repairs and maintenance. The Astrobee trio tests science and self-servicing by robots in space.

NASA and Russian officials are investigating a new leak aboard the International Space Station. The Russian Nauka science module sprung a leak in a 13-year-old backup radiator.

A NASA astronaut in a mockup spacesuit explored a moon-like landscape during a training exercise recently. She's getting ready for the agency's first lunar landing in 50 years.

'Right on track,' NASA said after the rocket booster segments arrived.

NASA is getting the Artemis 2 Orion spacecraft built while testing key activities that astronauts will perform on their way to the moon and back.

'If the engines light and the ship doesn't blow itself up … I think we've got a decent chance of reaching orbit.'

The world's biggest solar telescope will join the observing party.

The 26th Annual International Mars Society Convention will start Oct. 5. Here's how you can watch online.

NASA space shuttle astronaut Jan Davis first read her father's letters about being a WWII prisoner of war in 2020. The collection inspired her to write a new memoir, called "Air Born."

The Artemis 2 moon rocket's core stage now has all four of its RS-25 engines mounted in place. It's a big milestone for the mission as it sails toward a launch in late 2024.

NASA's Frank Rubio and his one-year crew are ready to come home at last, after their return was delayed by six months. The Soyuz astronauts handed over their work on the ISS on Sept. 26.

NASA's Artemis program will include consideration of 'ethical and societal matters' as the agency aims for the first human moon landings in 50 years, a new report pledges.

Loren Grush, author of new book 'The Six,' spoke with Space.com about Sally Ride, Judith Resnik and other pioneering NASA women astronauts.