Template:Selected anniversaries/June 25: Difference between revisions

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||1959 – Bobbie Vaile, Australian astrophysicist and astronomer (d. 1996)
||1959 – Bobbie Vaile, Australian astrophysicist and astronomer (d. 1996)
||1960: Walter Baade dies, German astronomer and author. He will discover that there are two types of Cepheid variable stars. Using this discovery he recalculated the size of the known universe, doubling the previous calculation made by Hubble in 1929.


||1960 – Two cryptographers working for the United States National Security Agency left for vacation to Mexico, and from there defected to the Soviet Union.
||1960 – Two cryptographers working for the United States National Security Agency left for vacation to Mexico, and from there defected to the Soviet Union.

Revision as of 05:45, 10 April 2018

  • 1593: Physician and archaeologist Michele Mercati dies. He was one of the first scholars to recognize prehistoric stone tools as human-made rather than natural or mythologically created thunderstones.

    1593: Physician and archaeologist Michele Mercati dies. He was one of the first scholars to recognize prehistoric stone tools as human-made rather than natural or mythologically created thunderstones.

  • 1764: Mathematician Maria Gaetana Agnesi uses Gnomon algorithm techniques to detect and prevent crimes against mathematical constants.

    1764: Mathematician Maria Gaetana Agnesi uses Gnomon algorithm techniques to detect and prevent crimes against mathematical constants.

  • 1907: Nuclear physicist J. Hans D. Jensen born. He will share half of the 1963 Nobel Prize in Physics with Maria Goeppert-Mayer for their proposal of the nuclear shell model.

    1907: Nuclear physicist J. Hans D. Jensen born. He will share half of the 1963 Nobel Prize in Physics with Maria Goeppert-Mayer for their proposal of the nuclear shell model.

  • 1997: An unmanned Progress spacecraft collides with the Russian space station Mir.

    1997: An unmanned Progress spacecraft collides with the Russian space station Mir.

  • 2011: Computer scientist, mathematician, and engineer Annie Easley dies. She was a leading member of the team which develops software for the Centaur rocket stage, and one of the first African-Americans to work as a computer scientist at NASA.

    2011: Computer scientist, mathematician, and engineer Annie Easley dies. She was a leading member of the team which develops software for the Centaur rocket stage, and one of the first African-Americans to work as a computer scientist at NASA.

  • 2017: New computational analysis of The Eel Time-Surfing reveals previously unknown cache of steganographic data.

    2017: New computational analysis of The Eel Time-Surfing reveals previously unknown cache of steganographic data.

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