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Believe that the world was geocentric
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First astronomer to present astronical theory.
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Danish astronomer, makes procise comprehensive measurments
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discovered pricibles of planetary motion
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revealed earth is not in middle
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known for reflecting telescope, calculus, & optics
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.