One of them is Jupiter. Jupiter is made of mostly hydrogen and helium gas. So, trying to land on it would be like trying to land on a cloud here on Earth. There's no outer crust to break your fall ...

Jovian storms can rework the whole chemical makeup of Jupiter's deep atmosphere by picking up ammonia from and dropping it ...

(CNN)-- Scientists don't know why, but one of Jupiter's two main cloud belts has disappeared -- again. Like a wayward pet, the belt has gone missing before and has always returned. "This is a big ...