One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Astronauts get taller when they are in space.
224
The sun is 330,330 times larger than the earth!
190
Earth is the only planet in our solar system that's not named after a god or goddess.
17
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
Lightning strikes about 6,000 times per minute on this planet!
158
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13