Facebook X Reddit Email Save. Jupiter, the fifth planet in our solar system and by far most massive, is a treasure trove of scientific discovery. Last year a pair of studies found that the planet ...

Saturn, despite being smaller than Jupiter, appears to have many more irregular moons. It may have three times as many as Jupiter, down to about two miles in size. The reason is unclear, Ashton said.

Saturn, despite being smaller than Jupiter, appears to have many more irregular moons. It may have three times as many as Jupiter, down to about two miles in size. The reason is unclear, Dr ...

Because it's bigger, Jupiter ought to have larger, more spectacular rings than Saturn has. But new research shows Jupiter's massive moons prevent that vision from lighting up the night sky.

Pieces of the rings range in size from tiny particles of dust to huge, mountain-size rocks. Saturn's rings extend up to 175,000 miles (282,000 km) from the planet.