An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
22
Summer on Uranus lasts for 21 years.
358
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
It 'snows' metal on Venus.
13
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25