The light hitting the earth right now is 30 thousand years old.
163
Pluto is smaller than Russia.
9
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10