Template:Selected anniversaries/May 10

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  28 BC: A sunspot is observed by Han dynasty astronomers during the reign of Emperor Cheng of Han, one of the earliest dated sunspot observations in China.

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  1482: Mathematician and astronomer Paolo dal Pozzo Toscanelli dies. Thanks to his long life, his intelligence and his wide interests, Toscanelli was one of the central figures in the intellectual and cultural history of Renaissance Florence in its early years.

• Abe Reles corpse.png

  1906: New York mobster and hit man Abe Reles born.

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  1958: Chrome Plover, the famed musical electroplating ensemble, perform new work in tribute to "Hello World" programs.

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  1960: Mathematician, art critic, and alleged time-traveller The Ell stops aquatic cryptid Neptune Slaughter from sabotaging Operation Sandblast.

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  1960: The nuclear submarine USS Triton completes Operation Sandblast, the first underwater circumnavigation of the earth.

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  2018: Green Tangle 4 declared Picture of the Day by the citizens of New Minneapolis, Canada.