Summer on Uranus lasts for 21 years.
358
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46