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Earth center ancient Greece astronomer geosentric
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Sun center heliocentric theory death bed
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Earth center build globe planets around sun
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Hans Lippershey
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Found orbit of mars elliptica telescope
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Thermometer compass improved telescope heliocentric motion
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laws of motion principle of gravity
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.