Mars's moon Phobos is so strange that no one knows how it formed. But a forthcoming mission could solve this mystery - and a host of other puzzles connected to the solar system's deep past ...

Mars' moon Phobos may actually be a comet — or at least part of one — that was gravitationally captured by the Red Planet long ago, a new preprint study based on previously unpublished photos ...

While it would be great to visit Phobos for other reasons, the monolith is not as big of a mystery as alien conspiracy ...

Phobos flew past the spacecraft and the camera ‘tracked’ the moon throughout the brief rendezvous between Phobos and Mars Express.

The MMX space probe from the Japanese space organisation JAXA is set to change this: it will examine the two Martian moons in detail from orbit and collect material samples from Phobos for the first ...