* A light year is 5,865,696,000,000 miles or about 9,460,800,000,000 kilometers.
*The angle at which light reflects off water to create a rainbow is 42 degrees.
* Photons have 0 mass.
* A "jiffy" is an actual unit of time for 1/100th of a second.
* When a flea jumps the rate of acceleration is 20 times that of the space shuttle during launch if every star in the milky way was a grain of salt they would fill an olympic sized swimming pool.
* 12 Astronauts have walked on the moon, bringing back 382 kilograms of rocks, pebbles, sand and dust between them Whales talk to each other by making a loud clicking noise.
* Electromagnetism is the interaction of particles with an electrical charge.
* The science of sound is called acoustics. Sound is used to study the interior of the earth.
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