Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
14
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Sound doesn't travel in space.
255
The population of the Earth has more than doubled since 1950.
151
Jupiter is bigger than all the other planets combined.
254
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9