When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The force of a suction cup is calculated using F=AP.
15
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
The average temperature at 40,000 feet above sea level is -60 F.
56