Sir Isaac Newton was the fearless explorer who expanded the boundaries of the universe in 1687 in England. One of the history’s most influential minds, this English scientist, mathematician, and philosopher literally wrote the book on physics. His three laws of motion explain how every object in the universe affects the movement of every other object. He helped invent the mathematical study of calculus (now you know who to thank when you take that tricky course). But Newton is most famous for sitting in a garden and spotting an apple falling from a tree – an observation that inspired his law that explains how all objects in the universe attract each other with a force relative to their size and distance from each other. In other words, gravity.
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