Pluto is smaller than Russia.
9
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
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 Earth gets 100 tons heavier every day due to falling space dust.
673
41% of the moon is not visible from earth at any time.
103
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
If two pieces of metal touch in space, they become permanently stuck together.
808