The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
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
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
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
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219