History · April 26, 1920
106 years ago · National Museum of Natural History, United States
The Great Debate, also called the Shapley–Curtis Debate, was held on 26 April 1920 at the U.S. National Museum in Washington, D.C. between the astronomers Harlow Shapley and Heber Curtis. It concerned the nature of so-called spiral nebulae and the size of the universe.
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The 107th anniversary falls on April 26, 2027.
AD 121–AD 180
1889–1951
1711–1776
1798–1863The Treaty of London (Italian: Trattato di Londra; Russian: Лондонский договор, romanized: Londonskiy dogovor) or the Pact of London (Patto di Londra, French: Pacte de Londres) was a secret agreement concluded on 26 April 1915 by the United Kingdom, France, and Russia on the one part, and Italy on the other, in order…
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The Geneva Conference was intended to settle outstanding issues resulting from the Korean War and the First Indochina War and involved several nations. It took place in Geneva, Switzerland, from 26 April to 21 July 1954.
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On 26 April 1986, reactor 4 of the Chernobyl Nuclear Power Plant, located near Pripyat in the Ukrainian SSR of the Soviet Union, exploded.
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General elections were held in South Africa between 26 and 29 April 1994. The elections were the first in South Africa in which citizens of all races could vote, bringing an end to the herrenvolk democracy that had existed since 1948 and marking the country's first election under universal suffrage.
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