One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
Earth is the only planet in our solar system that's not named after a god or goddess.
17
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6