Jupiter and Saturn may be similar in size and made of the same gases, but the weather at their poles tells a different story.

New simulations suggest Jupiter holds far more water than once thought, reshaping ideas about how the largest planet formed.

Using data gathered by NASA's Juno Jupiter orbiter, scientists estimate that Europa's ice shell is about 18 miles thick — ...

As part of Juno’s extended mission, the spacecraft is making close encounters of Jupiter’s large Galilean moons after having ...

The volcanic hot spot is larger than Lake Superior, spewing eruptions six times the total energy of all of the world's power plants.