Here's what we do know: Named for the king of the Roman gods, Jupiter is one of five planets visible with the naked eye. It's so massive that it could hold everything else in the solar system ...

Watch: The Planets Song Five fun facts about the Solar System Quiz ... Mars rocks in at number four, Jupiter, Saturn – that’s two more. Uranus and Neptune, then we’re done, The eight ...

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

On Monday, NASA is set to reveal some new findings about Jupiter's moon Europa ... in an extreme part of the solar system. SEE ALSO: 5 solar system worlds that are probably more watery than ...