An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The light hitting the earth right now is 30 thousand years old.
163
A comet's tail always points away from the sun.
2
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Pluto is smaller than Russia.
9