The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
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 Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
The sun is 330,330 times larger than the earth!
190
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