One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
The heart of an astronaut actually gets smaller when in outer space.
216
Some asteroids have other asteroids orbiting them.
131
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160