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Sir Arthur Eddington publishes The Expanding Universe: Astronomy's 'Great Debate', 1900–1931 in Cambridge. Comedian Will Hay observes the periodic Great White Spot on Saturn from his private observatory in London. [1] Fritz Zwicky postulates the existence of dark matter. [2]
They are the first evidence of the center of the Milky Way, and the firsts experiences that founded the discipline of radio astronomy. 1933 – Edward Milne names and formalizes the cosmological principle. 1933 – Fritz Zwicky shows that the Coma cluster of galaxies contains large amounts of dark matter. This result agrees with modern ...
The first major Arabic work of astronomy is the Zij al-Sindh by Muhammad ibn Musa al-Khwarizmi. The work contains tables for the movements of the Sun, the Moon, and the five planets known at the time. The work is significant as it introduced Ptolemaic concepts into Islamic sciences. This work also marks the turning point in Arabic astronomy.
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Cecilia Payne-Gaposchkin (born Cecilia Helena Payne; () May 10, 1900 – () December 7, 1979) was a British-American astronomer and astrophysicist.In her 1925 doctoral thesis she proposed that stars were composed primarily of hydrogen and helium. [1]
Karl Guthe Jansky (October 22, 1905 – February 14, 1950) was an American physicist and radio engineer who in April 1933 first announced his discovery of radio waves emanating from the Milky Way in the constellation Sagittarius.
A Brief History of Astronomy – via Internet Archive. Dreyer, J. L. E. (1953) [1906]. History of Astronomy from Thales to Kepler (2nd ed.). Dover Publications. Eastwood, Bruce (2002). The Revival of Planetary Astronomy in Carolingian and Post-Carolingian Europe. Variorum Collected Studies Series. Vol. CS 279. Ashgate. ISBN 0-86078-868-7.
The movie became the first feature film to use stop-motion animation models. March 3 – 1933 Sanriku earthquake: A powerful earthquake and tsunami hit Honshū, Japan, killing approximately 3,000 people. March 4. Franklin D. Roosevelt (FDR) is sworn in as the 32nd president of the United States, beginning his "first 100 days".