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Название: The Most Interesting Galaxies in the Universe
Автор: Joel L. Schiff
Издательство: Morgan & Claypool
Год: 2018
Формат: EPUB
Размер: 29,17 МБ
Язык: English
Prior to the 1920s it was generally thought, with a few exceptions, that our galaxy, the Milky Way, was the entire Universe. Based on the work of Henrietta Leavitt with Cepheid variables, astronomer Edwin Hubble was able to determine that the Andromeda Galaxy and others had to lie outside our own. Moreover, based on the work of Vesto Slipher, involving the redshifts of these galaxies, Hubble was able to determine that the Universe was not static, as had been previously thought, but expanding.