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
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
Earth is the only planet in our solar system that's not named after a god or goddess.
17
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127