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Johannes Kepler
He used his rival's painstakingly collected data — data the rival had died trying to protect — to prove that the planets moved in ellipses, not the perfect circles the universe was supposed to use.
1571–1630
Life Journey
A search for order in the heavens
Follow the story in a more continuous narrative, with a reading mode that matches how much depth you want.
1571
Humble beginnings
Kepler was born into a struggling family in southern Germany, where illness and hardship shaped his early life and sharpened his determination to study.
