The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Artemis 2 will use the SLS to send a crew of four aboard an Orion spacecraft on a 10-day mission looping within 4,600 miles (7,400 km) of the Moon. The crew consists of Commander Reid Wiseman, Pilot ...

Skygazers who look up at the moon tonight may be able to spot Saturn below it. Here's when and how to spot the conjunction.

Solar wind sounds poetic, but it's a very real and powerful phenomenon, connecting the Sun to every part of our solar system. Unlike the wind we feel .

International Space Station, where astronauts have lived and worked for 25 years, is visible to us on Earth. How to see it ...

The idea sounds simple enough when reduced to its basics. Put reflective surfaces in orbit and redirect sunlight back to Earth after sunset. A Califor.

When Pioneer 10 flew by Jupiter on Dec. 3, 1973, its margin of survival was closer to the knife-edge than it seemed. It ...

Forty years ago, the Challenger space shuttle disintegrated just after lift-off. A small team of engineers tried to prevent ...

NASA observed its annual Day of Remembrance Thursday to commemorate the astronauts killed in the Apollo 1 and space shuttle ...

Editor’s Note: Space is no longer the final frontier – it’s the next great market. Right now, 22,000 miles above our heads, ...

NASA's next moon rocket is on the launch pad for testing, and you can follow its progress live.

NASA says America’s push back to the Moon is accelerating, with Artemis II poised to launch a new era of U.S. space leadership.