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Earth in center, change of theory.
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Ptolemy is wrong, sun in center.
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Sun around earth, planets around sun.
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Planetary motion, elliptical way of rotation.
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First telescope used, watch planets closer.
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Discovered gravitational pull, 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.