NASA

The comet will be closest to Earth on Thursday.

An asteroid the size of a delivery truck will whip past Earth on Thursday night, one of the closest encounters ever recorded.

The first Native American woman in space has ventured out on her first spacewalk.

The planet is almost the same size as Earth, according to a research team led by astronomers at the Johns Hopkins University Applied Physics Laboratory.

It was last in the solar system during the Upper Paleolithic era of the Ice Ages.

The space agency says the chance of wreckage falling on anybody is “very low,” although some pieces are expected to survive after most of it burns up upon reentry.

The comet, known as C/2022 E3 (ZTF), will pass Earth later this month for the first time since the Ice Age. Here’s what you need to know.

Walter Cunningham, the last surviving astronaut from the first successful crewed space mission in NASA’s Apollo program, has died. He was 90. NASA confirmed Cunningham’s death. A family spokesman says he “from complications of a fall.” Cunningham was one of three astronauts aboard the 1968 Apollo 7 mission, an 11-day spaceflight that beamed live television broadcasts as they orbited Earth,...

It could be the end of the red dusty line for NASA’s InSight lander on Mars. The lander has fallen silent after four years of operation.

A U.S.-French satellite that will map almost all of the world’s surface water has rocketed into orbit. The predawn launch Friday from Vandenberg Space Force Base in California capped a highly successful year for NASA. The satellite will conduct the first global survey of its kind. Besides oceans and seas, it will measure the height and flow of water in...

NASA launched its SWOT ocean research mission Friday morning atop a SpaceX rocket.

NASA has canceled a planned spacewalk on the International Space Station after a leak was discovered in a Soyuz capsule docked to the station.

The Geminid meteor shower lights up the night sky each December, and it will be at its most visible Tuesday overnight into Wednesday morning.

NASA’s Artemis I mission to send the unmanned Orion spacecraft on a test flight to the moon ended in a successful water landing in the Pacific Ocean on Sunday.

NASA’s Orion capsule made a blisteringly fast return Sunday, parachuting into the Pacific off Mexico to conclude a dramatic 25-day test flight.

NASA’s landing and recovery team practiced recovering Orion off the coast of San Diego over the weekend.

NASA’s Orion capsule and its test dummies swooped one last time around the moon Monday, flying over a couple Apollo landing sites before heading home.

NASA said it will still be watching human-caused carbon pollution but in different ways.

NASA’s Orion capsule has broken the distance record set by Apollo 13 for a mission with a spacecraft designed to carry humans to deep space and back to Earth.

NASA’s Orion capsule is now circling the moon in an orbit stretching tens of thousands of miles. The capsule and its three test dummies entered lunar orbit Friday, more than a week after launching on the test flight.