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Hace 4 días · On the mountain, Hubble encountered his greatest scientific rival, Harlow Shapley, who had already made his reputation by measuring the size of the Milky Way, our own Galaxy.
Hace 5 días · Milky Way Galaxy - Structure, Dynamics, Stars: The first reliable measurement of the size of the Galaxy was made in 1917 by American astronomer Harlow Shapley. He arrived at his size determination by establishing the spatial distribution of globular clusters.
1 de jul. de 2024 · Entre 1915 y 1920 el joven astrónomo norteamericano Harlow Shapley (1885-1972) entró en escena con ideas totalmente frescas. No pretendía estudiar la estructura de la Galaxia, pero se dio cuenta, estudiando los cúmulos globulares, que su distribución aparente en el cielo es bastante curiosa.
Hace 4 días · The first reliable measurement of the size of the Milky Way Galaxy was made in 1917 by American astronomer Harlow Shapley. Assuming that the globular clusters outlined the Galaxy, he determined that it has a diameter of about 100,000 light-years.
Hace 3 días · In 1914, Harlow Shapley began a series of studies of globular clusters, published across about forty scientific papers. He examined the clusters' RR Lyrae variables (stars which he assumed were Cepheid variables ) and used their luminosity and period of variability to estimate the distances to the clusters.
4 de jul. de 2024 · In 1917 the American astronomer Harlow Shapley mounted a serious challenge to the Kapteyn universe. Shapley’s study of the distances of globular clusters led him to conclude that their distribution centred on a point that lay in the direction of the constellation Sagittarius and at a distance that he estimated to be about 45,000 light-years ...
Hace 2 días · In 1920, the Shapley–Curtis debate took place between Harlow Shapley and Heber D. Curtis over this issue. Shapley argued for a small universe the size of the Milky Way galaxy, and Curtis argued that the universe was much larger. The issue was resolved in the coming decade with Hubble's improved observations.
