Template:Selected anniversaries/March 2

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  1453: Doctor, astronomer, and astrologer Johannes Engel born. He will publish numerous almanacs, planetary tables, and calendars.

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  1478: Artist, inventor, and crime-fighter Leonardo da Vinci writes a letter to Johannes Engel, suggesting the need for an almanac of crimes against astronomical constants.

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  1791: Long-distance communication speeds up with the unveiling of a semaphore telegraph machine in Paris.

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  1911: Astronomer, physicist, and mathematician Arthur Eddington builds new type of scrying engine which detects and prevents crimes against mathematical constants.

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  1972: The Pioneer 10 space probe is launched from Cape Canaveral, Florida with a mission to explore the outer planets.

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  1997: Mathematician Jordan Carson Mark dies. He oversaw the development of nuclear weapons for the US military, including the hydrogen bomb in the 1950s.

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  2017: Famed gem detective Niles Cartouchian captures supervillain Fugitive Rubies.