A 100-pound person on Earth would weigh 38 pounds on Mars.
102
It takes eight and a half minutes for light to get from the sun to earth.
159
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
The population of the Earth has more than doubled since 1950.
151
A comet's tail always points away from the sun.
2
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14