Mars, Phobos
An astronomer is suggesting that Mars once had a large moon that exerted enough force to create a large bulge on its surface.
Unlike the other planets in the solar system, Mars is distinctly triaxial, meaning it is an ellipsoid with different sizes ...
Minuscule meteoroids slamming into the lunar surface could be kicking up most of the atoms that make up the lunar exosphere.
We are all familiar with our one Moon but other planets have different numbers of moons; Mercury has none, Jupiter has 95 and ...
The Curiosity rover, a car-sized NASA robot looking to find evidence of past habitability on the Red Planet, recently snapped an image of Mars' misshapen moon, Phobos, and Earth next to each other ...