The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Sound doesn't travel in space.
255
There are two golf balls sitting on the moon.
721
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The earth rotates more slowly on its axis in March than in September.
145
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277