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
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
In outer space there exists a gigantic cloud of alcohol which can be used to produce 400 trillion trillion pints of beer.
31
Astronauts get taller when they are in space.
224
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The earth travels through space at 660,000 miles per hour.
189
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