Mars has lost immense amounts of water over it lifetime, and scientists aren't sure exactly how. New research hints that the ...

For decades, scientists have theorized about how Mars reached its current state. Many believe that the Red Planet's surface ...

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

Why is Mars barren and uninhabitable, while life has always thrived here on our relatively similar planet Earth?

Aeolian bedforms are common on Earth and across the solar system, including on Mars, Venus, Pluto, the Saturn moon Titan, the Neptune moon Triton, and Comet 67P. These geological features, among the ...

The spacecraft now almost tips upside down relative to Mars to give its radar the best view. The Mars Reconnaissance Orbiter ...

A meteorite that is the largest known piece of Mars on Earth is expected to fetch up to $4 million when it goes up for ...

One of the great unsolved problems in modern planetary science is written on the surface of Mars. Mars has canyons that were ...