For sale: A 54-pound (25-kilogram) rock. Estimated auction price: $2 million to $4 million. Why so expensive? It's the ...

On July 28, a rare skywatching event will bring the crescent moon and Mars together in the Western skies of Southern ...

On Wednesday, Sotheby’s will auction off a chunk of rock believed to have originated on Mars for an anticipated two to four ...

They're not actual spiders, of course, but rather strange geological features.

A cross July 14-15, 1965 (depending on your time zone), the Mariner 4 mission was doing something incredible. This early NASA ...

Two meteorites found in the Sahara in 2023 might be from Mercury, a study suggests, but doubts remain due to how little is known about the planet closest to the sun.

This Mars rock is up for auction at Sotheby's in New York City this week, which is why it's currently on display in the Upper ...

There's a broad consensus in the scientific community that a follow-up mission to Pluto should be an orbiter, and not a ...

Without enough liquid water on the surface, a planet's atmosphere can become choked with carbon dioxide, raising temperatures ...

A 54-pound meteorite from Mars is expected to fetch up to $4 million when it goes up for auction later this month at ...