The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
A comet's tail always points away from the sun.
2
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
Earth is the only planet in our solar system that's not named after a god or goddess.
17
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
The light hitting the earth right now is 30 thousand years old.
163