An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
The light hitting the earth right now is 30 thousand years old.
163
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4
Earth is the only planet in our solar system that's not named after a god or goddess.
17
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