A meteorite from Mars, the largest piece ever found on Earth, sold for $5.3 million to an anonymous bidder at a Sotheby's auction in New York on Wednesday.

Astronomers discover Ammonite, a rare icy object beyond Pluto, challenging Planet Nine theory and offering clues to the solar system’s ancient origins.

A decade of observations by NASA’s Hubble Space Telescope has produced the sharpest and most detailed images of the Andromeda galaxy. Zoom in and explore.

Answers to those questions could come from a telescope with the world’s largest digital camera, a project with initial ...

I’m not sure whether it was elementary school science classes or Fred Flintstone’s Brontosaurus burgers that made the giant herbivore one of the most recognizable dinosaurs to me as a kid. But for ...

From the water that covers most of it to the moon that orbits it, here are some bizarre things about our home planet that science still doesn't completely understand.