Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
A comet's tail always points away from the sun.
2
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
If two pieces of metal touch in space, they become permanently stuck together.
808