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ptolemyearth center solar system scientist greek
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copernicusheliocentrism sun cencter univerce scientist docter
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braheprove religion wroung astronomer inveter sextant
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kelperearth revolves around sun eliptical movment
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galileopisa philosphy mathmatic falls same rate
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newtonlaws of motion theory of gravity
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.