The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
The heart of an astronaut actually gets smaller when in outer space.
216
The light hitting the earth right now is 30 thousand years old.
163
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
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
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5