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
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
NASA invented baby food as we know it today.
7
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14