Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
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
A comet's tail always points away from the sun.
2
If NASA sent birds into space they would soon die; they need gravity to swallow.
146