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 ...

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.

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

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

NASA’s Mars Reconnaissance Orbiter has learned to pull off daring 120-degree rolls that give its SHARAD radar ...

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 ...