Definition #78 Inventor


Johannes Kepler

born in 1571

validated Copernicus’s theory of a sun-centered solar system

helped Isaac Newton discover the law of gravity

designed the first eyeglasses for near-sightedness and far-sightedness

explained that tides are caused by the moon

the sun rotates on an axis

and was the first to calculate the year of the birth of Jesus Christ by using planetary cycles.

Do you want to forget this man’s name?

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