The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
A comet's tail always points away from the sun.
2
It would take more than 150 years to drive a car to the sun.
569
The population of the Earth has more than doubled since 1950.
151
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194