The spacecraft that has quietly rewritten our understanding of Mars just crossed a very visible milestone: the Mars Reconnaissance Orbiter has captured its 100,000th close-up view of the Red Planet.

NASA has lost contact with its MAVEN spacecraft that has been orbiting Mars for more than a decade. The orbiter, one of three zooming around Mars' atmosphere, had been working as expected before it ...

A Mars spacecraft has now been AWOL for more than a month. But NASA hasn't given up hope of restoring contact with the MAVEN orbiter.

A Mars spacecraft that has been orbiting the red planet for more than a decade has now been AWOL for more than a month. NASA first lost contact with its MAVEN orbiter at the beginning of December.

Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

MAVEN was built to last in orbit until 2030 — that's not looking likely anymore.

ESA's first mission to another world, the Mars Express orbiter, began circling the Red Planet on June 2, 2003. Ever since, ...