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Figured earth was centered, technilogical advansments
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Sun is center of the solar-system
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Improved the invented telescope, studied gravity
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percise abservations without a telescope
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Calculated the planets orbit in solar-system
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Creator of the laws of motion
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.