There are two small moons in orbit around Mars today, but both may be remnants of a much larger moon that had enough of a gravitational pull to drive tides in the Red Planet's lost lakes and seas ...

NASA's Maven spacecraft, which studied Mars' atmosphere and relayed communications for rovers, has lost contact after a decade in orbit. The silence began after it went behind the planet.

This week, NASA revealed that one of its spacecraft currently in orbit around Mars has inexplicably lost signal due to an ...

Regular, alternating layers in Gale Crater may have been deposited as the result of tides raised by a moon at least 18 times ...

CAPE CANAVERAL, Fla. — NASA has lost contact with a spacecraft that has orbited Mars for more than a decade. Maven abruptly ...

Curiosity has been exploring the surface of Mars since 2011, but what it found inside a rock last year has changed our ...

The spacecraft has also played a key role as a communications relay for NASA’s Curiosity and Perseverance rovers on the Martian surface ...

NASA has lost contact with MAVEN, a spacecraft that has been orbiting Mars for more than 11 years and one of only three ...

MAVEN has circled Mars for more than a decade, exploring the planet and relaying data from robots on the surface.

NASA said this week that it was working fine before it went behind the red planet. When it appeared again, there was only silence.

NASA has lost contact with one its three spacecraft orbiting Mars, the agency announced Tuesday. Meanwhile, a second Mars ...