One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
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
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 density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
It would take more than 150 years to drive a car to the sun.
569
Summer on Uranus lasts for 21 years.
358
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18