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Earth Centered Solar System Ptolemy's theory.
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Sun Centered Solar System Copernicus’ theory.
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Responsible for Modern Science, Innovated Telescope
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Sun Centered and Earth Centered Solar-System
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Planetary Motion in Ellipses not circles.
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Known for Creating 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.