A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Astronauts cannot burp in space.
232
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The sun is 330,330 times larger than the earth!
190
It 'snows' metal on Venus.
13
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194