12 years of W.M. Keck Observatory imagery of star system HR 8799 have been time-lapsed. The system hosts four planets that ...

Years of testing, emergency systems and sensors have gone into protecting the astronauts set to head to the moon.

Th Artemis II mission will take four astronauts thousands of miles beyond the moon before the Orion spacecraft makes a U-turn ...

A new analysis of archival Hubble Space Telescope photos reveals that a peculiar comet slowed its spin before fully reversing ...

The mission will send four astronauts aboard the agency’s powerful Space Launch System rocket on a roughly 10‑day journey.

NASA never did anything like this for the Apollo missions. During those journeys to the moon, the Saturn V rocket lifted the ...

Artemis II is underway, carrying four astronauts around the moon on a 10-day mission to test systems for later lunar flights ...

Follow along live as we track NASA's historic Artemis II mission.

The countdown has begun. Tonight, NASA will attempt to launch Artemis 2, the first crewed lunar mission since the Apollo era.

Four astronauts have begun a ten-day mission in which they’ll loop around the moon, laying the groundwork to put humans on ...

Wednesday's flight marks humanity's first trip to the moon since the Apollo program ended in 1972. Here's everything to know ...

NASA's Artemis II astronauts launched on a nine-and-a-half-day mission around the moon and back. Follow live updates.