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The Association operates a wide range of observing Sections which specialise in particular branches of astronomy, welcoming observers and astronomy enthusiasts of all abilities in a spirit of collaboration and mutual help. It also founded and supports the Campaign for Dark Skies, a UK-wide campaign against excessive light pollution.
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.
By historical astronomy we include the history of astronomy; what has come to be known as archaeoastronomy; and the application of historical records to modern astrophysical problems." Historical and ancient observations are used to track theoretically long term trends, such as eclipse patterns and the velocity of nebular clouds.
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]
Owen Jay Gingerich (/ ˈ ɡ ɪ ŋ ɡ ə r ɪ tʃ /; March 24, 1930 – May 28, 2023) was an American astronomer who had been professor emeritus of astronomy and of the history of science at Harvard University and a senior astronomer emeritus at the Smithsonian Astrophysical Observatory.
Concept sketch of David Dunlap Observatory. The DDO owes its existence almost entirely to the efforts Clarence Chant. [3] Chant had not shown an early interest in astronomy, but while attending University College, University of Toronto, he became interested in mathematics and physics, eventually joining the university as a lecturer in physics in 1892. [4]
A list of American feature films released in 1933. Hollywood was dominated by the eight major studios Fox Film, MGM, Paramount, RKO, Warner Brothers, Columbia Pictures, Universal Pictures and United Artists. Cavalcade won Best Picture at the Academy Awards.
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.