An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
The Earth gets 100 tons heavier every day due to falling space dust.
673
A comet's tail always points away from the sun.
2
Only 55% of Americans know that the sun is a star.
986
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
It 'snows' metal on Venus.
13
The sun puts out more power in 1 second than mankind has ever used within human existence.
14