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

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.

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.

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

NASA's Mariner 4 spacecraft made Solar System history. As it flew by Mars, the spacecraft's onboard camera snapped 22 pictures of the planet's surface, sending them back home to Earth – the first-ever ...

A giant rock from Mars and a Jurassic-era dinosaur skeleton are set to go under the hammer at Sotheby’s this week.

One lucky bidder will soon fork over millions of dollars to take home NWA 16788, a 54-pound (24-kilogram) Martian meteorite.

Mariner 4, built by JPL in Pasadena, took the images on July 14, 1965. One of the mission's leaders reflects on decades of ...