The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
41% of the moon is not visible from earth at any time.
103
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
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
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16