If NASA sent birds into space they would soon die; they need gravity to swallow.
146
The light hitting the earth right now is 30 thousand years old.
163
Jupiter is bigger than all the other planets combined.
254
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
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46