Newly discovered fossils have given scientists their first real glimpse of when Earth made a crucial transition from plants ...

The entrance to Ellison’s Cave doesn’t announce itself with neon signs or a gift shop selling overpriced geodes. You’ll find ...

When they awoke aboard the Orion spacecraft, the astronauts were approximately 169,000 miles from Earth and closing in on the ...

A chance observation by NASA’s Curiosity rover has uncovered the first direct physical evidence of an ancient Martian ...

A new analysis of meteorite isotopes challenges long-held ideas about Earth’s origins, suggesting our planet may have formed ...

The continental collisions that created this narrow Mideast waterway endowed the region with its petrochemical riches—and ...

Artemis II, NASA's first crewed mission to the moon in more than 50 years, launched Wednesday, April 1. It represents a shift ...

Meteor impacts may have helped spark life on Earth, creating hot, chemical-rich environments where the first living cells ...

Artemis II is about to launch to circle the moon. Part-time Cape Cod resident James Head has been plotting moon landings for ...

Analysis of Martian clay minerals suggests early Mars had sustained rainfall and potentially habitable conditions billions of years ago.

The NAU geologist joins a team that will play a critical role in shaping what astronauts do once they step onto the moon’s ...

On U.S. 60 between Globe and Show Low, travelers can find Arizona’s “Mini Grand Canyon”: the Salt River Canyon.