The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
The heart of an astronaut actually gets smaller when in outer space.
216
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Some asteroids have other asteroids orbiting them.
131