The moon that orbits the Earth is a rocky one, without volcanic activity. At least, that’s what most experts thought until 2014, when NASA’s Lunar Reconnaissance Orbiter found distinctive rock ...

From the discovery of gravity to the first mission to defend Earth from an asteroid, here are the most ... the apple tumbling to Earth also kept the moon in orbit around our planet and Earth ...

If this is really an impact structure, it would be Venus' oldest and largest, giving us a rare glimpse into Venus' past and ...

Dark matter makes up 85% of the stuff in the cosmos, but scientists have no idea what it is. Can you solve the case?

Researchers are working on technology that could follow NASA’s Europa Clipper mission and hunt for life in the ocean of ...

Then there’s the idea that asteroid fields ... quicksand-like black holes sucking everything in? They’re more like cosmic whirlpools that only pull in things very close to them. Oh, and if you tried ...

The UA's Steward Observatory Richard F. Caris Mirror Laboratory, attached to Arizona Stadium, creates mirrors for optical and ...

This list of commonly confused terms in astronomy will help you better understand the cosmos and the common phenomena we see in the sky.

Directly at center, between two dark cavities, is a supermassive black hole ... the asteroid will come within 20 lunar distances (a lunar distance is the length between Earth and the moon ...

A new book explores the world of tax havens and techno-utopias, and asks if they can be used for good.

Goodnight room, goodnight moon. The Hera spacecraft, speeding on to an asteroid, took a look back at Earth's moon — and in a new animation, you can see our neighbor shrinking as Hera flies away.