Astronauts cannot burp in space.
232
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Some asteroids have other asteroids orbiting them.
131
Lightning strikes about 6,000 times per minute on this planet!
158
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Astronauts get taller when they are in space.
224
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82