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
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
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
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The Earth gets 100 tons heavier every day due to falling space dust.
673
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
The population of the Earth has more than doubled since 1950.
151