This new model proposes that Phobos and Deimos resulted from the wreckage of a larger asteroid that wandered too close to Mars and crossed its Roche limit — the distance at which gravitational ...

Phobos and Deimos – these names from Greek mythology were ... The asteroid moons could perhaps even originate from beyond the orbit of Neptune. Arguments against this model include the fact that both ...

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 ...