The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
It 'snows' metal on Venus.
13
Pluto is smaller than Russia.
9
Earth is the only planet in our solar system that's not named after a god or goddess.
17
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118