Edwin Hubble | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-08

This is an audio version of the Wikipedia Article:
Edwin Hubble


00:01:19 1 Biography
00:06:41 2 Discoveries
00:06:50 2.1 Universe goes beyond the Milky Way galaxy
00:09:05 2.2 Redshift increases with distance
00:13:32 3 Accusations concerning Lemaître's priority
00:14:31 4 No Nobel Prize
00:15:19 5 Stamp
00:16:25 6 Honors
00:16:34 6.1 Awards
00:17:02 6.2 Namesakes
00:17:39 6.3 Other notable appearances
00:18:02 7 In popular culture
00:18:56 8 See also
00:19:45 9 References and notes
00:19:54 10 Further reading
00:21:55 11 External links



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SUMMARY
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Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer. He played a crucial role in establishing the fields of extragalactic astronomy and observational cosmology and is regarded as one of the most important astronomers of all time.Hubble discovered that many objects previously thought to be clouds of dust and gas and classified as "nebulae" were actually galaxies beyond the Milky Way. He used the strong direct relationship between a classical Cepheid variable's luminosity and pulsation period (discovered in 1908 by Henrietta Swan Leavitt) for scaling galactic and extragalactic distances.Hubble provided evidence that the recessional velocity of a galaxy increases with its distance from the earth, a property now known as "Hubble's law", despite the fact that it had been both proposed and demonstrated observationally two years earlier by Georges Lemaître. Hubble's Law implies that the universe is expanding. A decade before, the American astronomer Vesto Slipher had provided the first evidence that the light from many of these nebulae was strongly red-shifted, indicative of high recession velocities.Hubble's name is most widely recognized for the Hubble Space Telescope which was named in his honor, with a model prominently displayed in his hometown of Marshfield, Missouri.