Asteroid & Comet Missions

NASA's OSIRIS-REx spacecraft is carrying the first ever asteroid samples recovered by the agency. Now, after a 1.2 billion-mile journey back to Earth, it's about to land.

A ground-based telescope in the Canary Islands snapped a photo of NASA's OSIRIS-REx probe on Sept. 16, eight days before its asteroid sample lands on Earth.

NASA's first asteroid sample will return to Earth next week, and you can help create the soundtrack for the spacecraft's epic touchdown.

NASA's OSIRIS-REx probe is set to deliver its bounty of asteroid samples to Earth on Sunday (Sept. 24). What is the ultimate fate of this space-rock stuff?

NASA's OSIRIS-REx mission will face one of the toughest parts of its journey: Protecting samples taken from asteroid Bennu as its capsule descends through Earth's atmosphere for recovery.

The return capsule of NASA's OSIRIS-REx mission is scheduled to touch down in Utah on Sept. 24, bearing samples of asteroid Bennu. Here's how to watch the event live.

NASA's OSIRIS-REx mission taught astronomers how little they know about space rocks. They might be only a few hundreds of feet wide, but their geology appears surprisingly complex.

NASA's OSIRIS-REx probe performed one last trajectory-correcting maneuver on Sunday (Sept. 17) to set up the Sept. 24 arrival of its asteroid sample here on Earth.

Asteroid Dimorphos, which NASA intentionally hit with a rocket during its DART mission in September 2022, is behaving in unpredicted ways.

NASA's OSIRIS-REx mission is delivering a precious haul of asteroid dirt and gravel to Earth this weekend. How much of this space-rock stuff will there be?