Template:Selected anniversaries/November 14
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1716: Mathematician and philosopher Gottfried Wilhelm Leibniz dies. He developed differential and integral calculus independently of Isaac Newton, and designed and built mechanical calculators.
1971: Mariner 9 enters orbit around Mars. It will map 70% of the surface, and study temporal changes in the atmosphere and surface.
2017: Dennis Paulson celebrates forty-sixth anniversary of Mariner 9 entering orbit around Mars.