Several states could catch a glimpse of the northern lights Tuesday, though no geomagnetic storms are expected.

Most states along the Canadian border could see the northern lights Monday night, as auroral activity is expected to calm ...

NASA astronaut Don Pettit -- NASA’s oldest active astronaut at 69 -- arrived at the station last week on his fourth trip to ...

The Fram2 mission, paid for and led by a cryptocurrency billionaire who is flying with three guests, has returned after a ...

Guests were crossing the Drake Passage at the time, a notoriously treacherous waterway between Antarctica and South America.

After adjusting to microgravity—and getting through a few bouts of vomiting—the astronauts got to work in polar orbit.