Astronauts cannot burp in space.
232
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The population of the Earth has more than doubled since 1950.
151
Astronauts get taller when they are in space.
224
The light hitting the earth right now is 30 thousand years old.
163
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
A comet's tail always points away from the sun.
2
Pluto is smaller than Russia.
9