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A cesium atom in an atomic clock that beats over nine billion times a second.
A Chinese Scientist discovered that the Earth is round during the Han Dynasty by measuring the sun and moon's path in the sky. He recorded this fact down in the imperial records but went unnoticed until it was unearthed recently but Chinese archaeologists.
A galactic year is 250 million Earth-years. This is the time it takes for our solar system to make one revolution around the Milky Way Galaxy.
A Hungarian named Ladislo Biro invented the first ballpoint pen in 1938.
Back in 1920, the Russian transplant pioneer Serge Voronoff made headlines by grafting monkey testicles onto human males.
By weight, the sun is 70% hydrogen, 28% helium, 1.5% carbon, nitrogen, and oxygen, and 0.5% all other elements.
George Washington grew marijuana in his garden.
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