This Planet was called Hermes to the Romans, the messenger of the gods, because it moved so quickly across the sky.
This planets surface is twice as hot as Mercurys despite being twice as far from the Sun.
The only Planet in our galaxy whose name does not derive from ancient Greek or Roman mythology.
This planet is host to Olympus Mons, the largest mountain in the solar system, rising 78,000 ft above the surrounding plain.
In July of 1994 the comet Shoemaker - Levy 9 collided with this planet with spectacular results that could be seen for nearly a year afterwards.
If there was a glass of water big enough, this planet would float. Its specific gravity being 0.7 less than water.
This planet is often the "butt" of every space joke.
This lonley planet has only been visited once by us in 1989. Much of what we know about it has come from this single encounter.
This orb was reclassified as a dwarf planet in 2006.
Actually reffered to as a satellite, this moon of Jupiter, is the most volcanic body in the solar system having over 400 volcanos.