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About 16 years Copernicus Developed his theory that earth rotated around the sun and rotated on its own axis. Also that stars and planets were farther away from us than we believed.
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Copernicus finally published hos book on the Revolution of the celestial spheres. Which is about how the sun is in fact the center of our solar system
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Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.