Sound doesn't travel in space.
255
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Astronauts cannot burp in space.
232
The ashes of the man who discovered Pluto are currently en route to dwarf planet, scheduled to arrive on the 14th of July, 2015.
11
Lightning strikes about 6,000 times per minute on this planet!
158
It 'snows' metal on Venus.
13
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9