With a radius of 2,106 miles, Mars is the seventh largest planet in our solar system and about half the diameter of Earth. Its surface gravity is 37.5 percent of Earth’s. Mars rotates on its ...

A space probe named Hera captured images of Mars' small Deimos moon while on a mission to examine an asteroid.

The first time you may have heard the term ‘dwarf planet’ was when Pluto got demoted to one in 2006 (RIP). However, we actually have six in our Solar System. Pluto, Ceres, Makemake, Haumea, and Eris ...

Need a new idea to keep kids entertained? Try stargazing. Free learning activities and videos about the solar system Free learning activities and videos about the solar system Free learning ...

Qi Zhang, a doctoral student at the Swedish Institute of Space Physics and Umeå University, explores in her doctoral thesis ...

Jupiter has the most moons in our solar system, 95 of which we know. Mars has the tallest volcano in the solar system, Olympus Mons: 13 miles high — nearly three times the height of Mount Everest.

Mars will appear to stand still in the night sky before it makes its regular eastward retrograde orbit through the solar system. Retrograde is the backward movement relative to its usual direction ...

This is a photo of Meridium Planum, a plain on the surface of Mars ... of the distant Solar System that we know about, such as the Kuiper Belt. It's all good and well knowing facts about space ...