The discovery of more than 15,000 kilometers of ancient riverbeds on Mars suggests that the Red Planet may once have been ...

If we're to land humans on Mars in the coming decades, we'll have to know what challenges await them when they get there.

An analysis led by the University of Chicago of Mars Science Laboratory Curiosity rover data may explain why the planet was ...

A warm afternoon on ancient Mars lasted about as long as a Silicon Valley internship. That is the sobering conclusion of a ...

Mars has long captured humanity’s imagination, especially given the tantalizing evidence of ancient river valleys and ...