The solar system is home to bizarre moons like Enceladus and Callisto, each unveiling nature’s wonders and some of science’s ...

So exactly how many solar system moons have we found? The answer, it turns out, depends on your definition of a moon. But this is likely just "the tip of the iceberg," Edward Ashton, an astronomer ...

Read more: How Long Is Each Moon Phase? Considering how the Earth's moon came to be — a barrage of solar system debris — and the fact that Venus is often the closest planet to Earth ...

Astronomers have discovered a panoply of new moons orbiting Saturn, bringing the ringed gas giant's total up to 274 moons—far ...

Ganymede, Jupiter's largest moon and the solar system's largest, is bigger than Mercury and the dwarf planet Pluto, with a diameter of 5,268 kilometers.

What can a sample return mission from Jupiter's volcanic moon, Io, teach scientists about planetary and satellite (moon) ...

The Saturn system has always been a contender in the contest for most moons in the solar system. For a while, it was duking it out with Jupiter for the title, but after a recent trio of announcements ...

For more than 10 years, Cassini observed Saturn and its family of strange moons, providing us with a window into the unique worlds in our outer solar system. Here is a list of Saturn's 63 ...

The discovery of salty mineral evaporites on Ryugu indicates that watery environments may have been widespread in the early ...

A new classification scheme may help us better understand planet formation — including the history of our own family of worlds.