Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Sound doesn't travel in space.
255
It would take more than 150 years to drive a car to the sun.
569
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
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
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15