November 18

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  1724: Inventor and priest Bartolomeu de Gusmão dies.

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  1831: Physicist Johannes Bosscha Jr. born. He will make important investigations on galvanic polarization and the rapidity of sound waves; he will be one of the first (1855) to suggest the possibility of sending two messages simultaneously over the same wire.

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  1865: Mark Twain's short story "The Celebrated Jumping Frog of Calaveras County" is published in The Saturday Press.

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  1959: Mathematician and academic Aleksandr Khinchin dies. He was one of the founders of modern probability theory.

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  1962: Physicist and philosopher Niels Bohr born. He will make foundational contributions to understanding atomic structure and quantum theory, for which he will receive the Nobel Prize in Physics in 1922.

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  2013: NASA launches the MAVEN probe to Mars.

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  2017: Dennis Paulson celebrates fourth anniversary of NASA launching the MAVEN probe to Mars.