It takes eight and a half minutes for light to get from the sun to earth.
159
Sound doesn't travel in space.
255
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
It 'snows' metal on Venus.
13
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82