The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194