There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
If NASA sent birds into space they would soon die; they need gravity to swallow.
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It 'snows' metal on Venus.
13
According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
14
Summer on Uranus lasts for 21 years.
358
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