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part of one — that was gravitationally captured by the Red Planet long ago, a new preprint study based on previously unpublished photos ...

NASA’s Hubble Space Telescope captured a cameo appearance of the tiny moon Phobos on its trek around the Red Planet. Even today, it is frequently called the "Red Planet" because iron minerals in the ...

Phobos and Deimos – these names from Greek mythology were ... The resulting rocky debris will probably form a temporary ring around Mars. The first close-up images of the martian moons were sent to ...

With each video or photo of a Martian eclipse that a robotic explorer takes, astronomers can better understand the changing ...