Sound doesn't travel in space.
255
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Summer on Uranus lasts for 21 years.
358
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Jupiter is bigger than all the other planets combined.
254