The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
In outer space there exists a gigantic cloud of alcohol which can be used to produce 400 trillion trillion pints of beer.
31
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The earth travels through space at 660,000 miles per hour.
189
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9