There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
More than 20 million meteoroids enter Earth's atmosphere every day.
139
The heart of an astronaut actually gets smaller when in outer space.
216
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The light hitting the earth right now is 30 thousand years old.
163
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Only 55% of Americans know that the sun is a star.
986
The Earth gets 100 tons heavier every day due to falling space dust.
673