Sound doesn't travel in space.
255
It would take more than 150 years to drive a car to the sun.
569
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
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
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
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
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13