Summer on Uranus lasts for 21 years.
358
Sound doesn't travel in space.
255
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
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
Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
14
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
NASA invented baby food as we know it today.
7