Template:Selected anniversaries/May 30

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  • 1423: Mathematician and astronomer Georg von Peuerbach born. He will be remembered for his streamlined presentation of Ptolemaic astronomy in the Theoricae Novae Planetarum.

    1423: Mathematician and astronomer Georg von Peuerbach born. He will be remembered for his streamlined presentation of Ptolemaic astronomy in the Theoricae Novae Planetarum.

  • 1739: Jacques de Vaucanson demonstrates his Digesting Duck automaton for the first time.

    1739: Jacques de Vaucanson demonstrates his Digesting Duck automaton for the first time.

  • 1946: Physicist Louis Slotin dies. He was fatally irradiated in a criticality incident during an experiment with the demon core at Los Alamos National Laboratory.

    1946: Physicist Louis Slotin dies. He was fatally irradiated in a criticality incident during an experiment with the demon core at Los Alamos National Laboratory.

  • 1964: Physicist and academic Leo Szilard dies. He conceived the nuclear chain reaction in 1933, and patented the idea of a nuclear reactor with Enrico Fermi.

    1964: Physicist and academic Leo Szilard dies. He conceived the nuclear chain reaction in 1933, and patented the idea of a nuclear reactor with Enrico Fermi.

  • 1971: NASA launches the Mariner 9 spacecraft. It will map 70% of the surface of Mars, and study temporal changes in the atmosphere and surface.

    1971: NASA launches the Mariner 9 spacecraft. It will map 70% of the surface of Mars, and study temporal changes in the atmosphere and surface.

  • 2016: Blue Green Spiral voted Picture of the Day by the citizens of New Minneapolis, Canada.

    2016: Blue Green Spiral voted Picture of the Day by the citizens of New Minneapolis, Canada.

  • 2017: Dennis Paulson of Mars celebrates the forty-sixth anniversary of the launch of Mariner 9.

    2017: Dennis Paulson of Mars celebrates the forty-sixth anniversary of the launch of Mariner 9.

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