Researchers initially believed the samples came from the Moon’s mantle. Testing iron, manganese, and zinc levels showed their ...

The drive to Meteor Crater takes you through quintessential Arizona landscape – endless horizons, scattered juniper and pinyon pines, and that particular shade of rusty orange soil that seems to exist ...

Newly dated fossils from New Mexico challenge the idea that dinosaurs were in decline—and suggest instead they had formed ...

Stargazers are in for a treat this week as the Orionid meteor shower reaches its peak — with a rare appearance of Comet ...

In a discovery that could rewrite what we know about where water comes from and the building blocks of life in the solar ...

Hidden deep in ancient rocks, scientists have found the surviving traces of Earth’s first form—unchanged for 4.5 billion ...

Karl Karlstrom, a geologist recently retired from the University of New Mexico, grew up in Flagstaff, Arizona. Grand Canyon ...

The rare samples, uncovered by China’s Chang’e-6 mission, might help to reveal secrets of how the Solar System evolved.

The newly discovered "twilight" asteroid, 2025 SC79, was obscured by the sun's glare until an astronomer pointed the Dark ...

Standing at the edge of Meteor Crater near Winslow, Arizona feels like peering into another world—a massive bowl carved into the Earth by a visitor from space that arrived with the subtlety of a ...

Not everything about space is true. Our planetary scientist is here to share the truth about popular celestial myths.