If two pieces of metal touch in space, they become permanently stuck together.
808
It 'snows' metal on Venus.
13
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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
When a massive power outage struck southern California in the 1990s, Los Angeles residents reportedly called 911 to express alarm about strange clouds hovering overhead; they were seeing the Milky Way for the first time.
31
Pluto is smaller than Russia.
9
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10