An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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
Some asteroids have other asteroids orbiting them.
131
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The heart of an astronaut actually gets smaller when in outer space.
216
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6