The Earth gets 100 tons heavier every day due to falling space dust.
673
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Only 55% of Americans know that the sun is a star.
986
It would take more than 150 years to drive a car to the sun.
569
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
Today's top fuel dragsters take off with more force than the space shuttle.
120