The space agency's long-awaited Artemis I mission will have to wait until at least Friday, after a problem with one of the SLS rocket's engines was discovered.

NASA's Apollo missions already sent astronauts to the moon from 1969 to 1972. But scientists say there's still lots of good science to do there. The moon also could be an ideal stepping stone to Mars.

The Artemis I mission is uncrewed, but that doesn't mean the spacecraft is empty. Lots of mementos are making the trip, along with manikins that will help NASA prepare to send humans back to the moon.

The telescope uses a camera with filters that can make a color map out of infrared light, which is invisible to the human eye.

The Sturgeon Moon became visible Thursday night, appearing bigger and brighter than usual because of its proximity to Earth.

Supermoons in general appear 17% bigger and 30% brighter than when the moon is at its farthest point away from Earth, according to NASA.

The Perseids, the most popular meteor shower, will soon reach its peak. For best visibility, make sure you find a dark location and avoid light pollution from cities.

Researchers discovered that lunar pits and caves could provide stable temperatures around 63 degrees Fahrenheit, leading to new possibilities for experiments and life there.

NASA engineer Nagin Cox lives on Earth but works on Mars time, where days are longer and time works differently. Her work with the rovers has entirely changed the way she thinks about time on Earth.

The first image from NASA's new space telescope is the deepest view of the universe ever captured. The picture is the farthest humanity has ever seen in both time and distance, closer to the dawn of time and the edge of the universe.

NASA's $10 billion new telescope will show the world something remarkable today: an image of some of the first galaxies to form in the universe.

Those in North America have the best shot at seeing the shower at about 1 a.m. on the East Coast or 10 p.m. on the West Coast.

For decades, U.S. astronauts and Russian cosmonauts have lived side-by-side aboard the International Space Station. Now some are wondering whether that partnership can withstand the war in Ukraine.

The return of three Americans and one German marks the busiest period yet for Elon Musk's space taxi service.

NASA and the European Space Agency are gearing up to bring home a pristine sample of Martian rock. But given the small chance of life on the red planet, they have to grapple with safety questions.