Some asteroids have other asteroids orbiting them.
131
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
A comet's tail always points away from the sun.
2
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
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121