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

A new map shows hidden Martian rivers stretching thousands of miles, offering fresh evidence of a warm, wet ancient Mars.

The auction house Sotheby’s has offered a new way to get a piece of Mars without entrusting your life to Elon Musk, who has pledged to send people to Mars by 2029: Buying a piece of it instead. A ...

Sotheby's is putting some rare items up for auction, including what it calls the largest piece of Mars ever found on Earth.

TNT benefited from a Mo Tautuaa dunk that was later nullified because of an offensive goaltending through a review and ...