Edwin Hubble (nonfiction): Difference between revisions
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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 (nonfiction)|Henrietta Swan Leavitt]]) for scaling galactic and extragalactic distances. | 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 (nonfiction)|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 known as "Hubble's law", a preliminary version of which was proposed earlier by Georges Lemaître. | Hubble provided evidence that the recessional velocity of a galaxy increases with its distance from the earth, a property known as "Hubble's law", a preliminary version of which was proposed earlier by [[Georges Lemaître (nonfiction)|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 Law implies that the universe is expanding. A decade before, the American astronomer [[Vesto Slipher (nonfiction)|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. | 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. | ||
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== Fiction cross-reference == | == Fiction cross-reference == | ||
* [[Crimes against | * [[Crimes against astronomical constants]] | ||
* [[Gnomon algorithm]] | |||
* [[Gnomon Chronicles]] | |||
== Nonfiction cross-reference == | |||
* [[Henrietta Swan Leavitt (nonfiction)]] | * [[Henrietta Swan Leavitt (nonfiction)]] | ||
* [[Georges Lemaître (nonfiction)]] | |||
* [[Vesto Slipher (nonfiction)]] | * [[Vesto Slipher (nonfiction)]] | ||
External links: | External links: | ||
Latest revision as of 06:14, 27 October 2019
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 known as "Hubble's law", a preliminary version of which was proposed 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.
In the News
Fiction cross-reference
Nonfiction cross-reference
External links:
- Edwin Hubble @ Wikipedia