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geocentric, astronomer, moon, book, treaties, inventor
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heliocentric, theories, astronomer, initiator, planets, controversy
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noseless, geocentric, supernova, tychonic, telescope
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laws, elliptical, orbit, heliocentric, model, books
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Hans Lippershey invented the telescope.
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innovative, compass, humanism, theory, universal law, telescope
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motion, book, light, calculus, telescope, reflection
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.