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 volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
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
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6