Is Jupiter a failed star, or is it simply a giant planet in our solar system? While Jupiter shares a similar chemical composition to the Sun—mainly hydrogen and helium,it isn’t quite massive enough to ...

Jupiter has 95 known moons, and thousands of other small objects orbit the giant planet. Ganymede is the biggest moon in the solar system and is larger than the planet Mercury.

First, some facts Jupiter, the fifth planet from the Sun, is between Mars and Saturn. It’s the largest planet in the solar system, big enough for more than 1,000 Earths to fit inside, with room ...