The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
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
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
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 sun is 330,330 times larger than the earth!
190
Earth is the only planet in our solar system that's not named after a god or goddess.
17