Sound doesn't travel in space.
255
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 light hitting the earth right now is 30 thousand years old.
163
Some asteroids have other asteroids orbiting them.
131
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
The sun puts out more power in 1 second than mankind has ever used within human existence.
14