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Wellsprings
On this day in history

October 8

ChristianScience
  1. 451 CEChristian

    The Council of Chalcedon, the fourth ecumenical council, convened near Constantinople to define the two natures of Christ.

  2. 1873 CEScience · born

    Astronomer Ejnar Hertzsprung, born 8 October 1873 near Copenhagen, related stars' colours to their true brightness, work that underlies the Hertzsprung–Russell diagram central to stellar astronomy.

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