One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
A comet's tail always points away from the sun.
2
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
It would take more than 150 years to drive a car to the sun.
569
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
Some asteroids have other asteroids orbiting them.
131
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194