There are more nerve cells in the human brain than there are stars in the Milky Way.
349
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
The light hitting the earth right now is 30 thousand years old.
163
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277