The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
In outer space there exists a gigantic cloud of alcohol which can be used to produce 400 trillion trillion pints of beer.
31
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
More than 20 million meteoroids enter Earth's atmosphere every day.
139
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
Venus is the only planet that rotates clockwise.
310
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194