But it’s not just looks. Rocky composition, general size, orbital behaviors—a lot of those qualities can be the same on both ...

Discover the dramatic forces creating spectacular weather on neighboring planets and moons. Out in the solar system, the weather gets wacky – with globe-spanning dust storms, monsoons of liquid ...

I'm a physics instructor who has followed the current theories that describe why some planets have moons and some don't. First, a moon is called a natural satellite.

For sure, it was a far-reaching recommendation: The planet Uranus and its moons should be NASA's highest-priority new flagship mission for startup in the decade 2023-2032.

When the Sun expands into a red giant, it will swallow the inner solar system and raise the temperature in the outer regions.