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earth centered rome geocentrism outdated historic
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theory sun centered solar system heliocentrism
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medicine jupiter's four moons different weights
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sextant astronomer different thoughts inventor stars
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earth revolved around sun elliptical orbit
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three newton laws telescope gravity refraction
A list shows items. A timeline shows sequence.
Use Timetoast to make dates, milestones, and turning points easier to understand in a clear visual format. Timetoast is a timeline maker for work, school, research, and stories.