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
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
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Venus is the only planet that rotates clockwise.
310
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
A comet's tail always points away from the sun.
2