An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
A comet's tail always points away from the sun.
2
The light hitting the earth right now is 30 thousand years old.
163
There are two golf balls sitting on the moon.
721
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178