Another hypothesis is that Phobos and Deimos formed very much like Earth's moon did — that an impact on the surface of Mars threw debris into orbit that eventually coalesced into the two moons.

By contrast, Deimos is tiny, with a radius of 6 km, and quite a bit further out, more than 23,000 km from the surface. It is ...

Mars has two small, potato-shaped moons, called Phobos and Deimos. These moons are named for two sons of the Greek god of war, Ares, which the Romans called Mars. The names Phobos and Deimos mean ...

President Donald Trump's nominee to lead NASA, entrepreneur Jared Isaacman, faced questions from senators on Wednesday about ...

In the Senate hearing considering the confirmation of Jared Isaacman as NASA Administrator, he and Senator Ted Cruz engaged ...

Mars will be closest to the moon, separated by just 2 degrees in the sky as seen from Earth. (Your fist at arm's length equals around 10 degrees.) The pair will be in the Gemini constellation.

the occultation of Mars only presents two very short opportunities to capture the event: the first, called ingress, is when Mars slips behind the moon and, for a few seconds, is seen setting ...

Moon Vs. Mars: Trump's NASA Pick Says Both Can Be Done ... but said the rocket is part of the current plan and that he wants to see the Artemis 2 crew get to the moon. Isaacman has previously ...

we don't have to make a binary decision of Moon versus Mars," Isaacman said ... the current plan and that he wants to see the Artemis 2 crew get to the moon. Isaacman has previously criticized ...