Jupiter's moon Ganymede, is larger than the planet Mercury!
149
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
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Astronauts cannot burp in space.
232
It would take more than 150 years to drive a car to the sun.
569
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4