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 typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
The earth rotates more slowly on its axis in March than in September.
145
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Some asteroids have other asteroids orbiting them.
131
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Sound doesn't travel in space.
255