Sound doesn't travel in space.
255
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The heart of an astronaut actually gets smaller when in outer space.
216
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
It would take more than 150 years to drive a car to the sun.
569
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194