An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
If two pieces of metal touch in space, they become permanently stuck together.
808
Astronauts get taller when they are in space.
224
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
The earth travels through space at 660,000 miles per hour.
189
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277