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
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
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