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
The earth travels through space at 660,000 miles per hour.
189
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Astronauts get taller when they are in space.
224
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147