Summer on Uranus lasts for 21 years.
358
If two pieces of metal touch in space, they become permanently stuck together.
807
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
The light hitting the earth right now is 30 thousand years old.
163
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Sound doesn't travel in space.
255
It would take more than 150 years to drive a car to the sun.
569
Jupiter is bigger than all the other planets combined.
254