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</html><description>How do planets move? What keeps the moon in orbit? In The System of the World, legendary physicist Isaac Newton expands upon his theories of gravity, motion, and planetary dynamics, offering one of the most profound and influential works in the history of science. Originally written as the third volume of Philosophi&#xE6; Naturalis Principia Mathematica, [&hellip;]</description><thumbnail_url>https://mob25.com/blog/wp-content/uploads/2026/10/71924089.jpg</thumbnail_url></oembed>

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