The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
The light hitting the earth right now is 30 thousand years old.
163
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
