NASA has lost contact with its MAVEN spacecraft that has been orbiting Mars for more than a decade. Here's what we know.

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 has lost contact with its MAVEN spacecraft that launched from Florida and has been orbiting Mars for more than a decade.

China is about to switch on a satellite production complex that will reshape the balance of power in orbit, turning a ...