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
Lightning strikes about 6,000 times per minute on this planet!
158
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115