Astronomy Lecture 11-5

Astronomy Lecture 11-5 - Milky Way. The debate remained...

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Astronomy Lecture 11-5 16:26 How did Hubble prove that galaxies lie far beyond the Milky Way? The puzzle of “spiral nebulae” Before Hubble, some scientists argued that “spiral nebulae” were entire galaxies like our  Milky Way, while others maintained they were smaller collections of stars within the 
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Unformatted text preview: Milky Way. The debate remained unsettled until 1924 when Edwin Hubble finally measured the distance to the Andromeda Galaxy using Cepheid variables. The spectral features of virtually all galaxies are redshifted, which means that theyre all moving away from us. 16:26 16:26...
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This note was uploaded on 01/25/2012 for the course 750 110 taught by Professor Ericgawaiser during the Fall '10 term at Rutgers.

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Astronomy Lecture 11-5 - Milky Way. The debate remained...

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