The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The population of the Earth has more than doubled since 1950.
151
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
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
It 'snows' metal on Venus.
13
Pluto is smaller than Russia.
9
Today's top fuel dragsters take off with more force than the space shuttle.
120