So exactly how many solar system moons have we found ... according to The Planetary Society. Starting closest to the sun, our ...

Jovian planets: The ice and gas planets of the outer solar system are able to have many moons because of their size. Galilean satellites: Out of all of Jupiter’s moons, the four largest — Io ...

Like all moons in the outer solar system, it's mostly made of water ice, but its surface is unusually dark. When Cassini flew past it measured its density to be 55% that of water — its interior ...

It's very common in our solar system for moons that are close enough to their ... NARRATOR: Although we can't see this far out, comets with orbits starting in the Oort Cloud streak across our ...

Astronomers using the James Webb Space Telescope have captured breathtakingly detailed images of two giant exoplanets ...

Some of the most fascinating worlds in our cosmic neighborhood are not planets, but the moons that orbit around them. When you purchase through links on our site, we may earn an affiliate commission.