Tired light
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What links here
Vesto Slipher
Gold Medal of the Royal Astronomical Society
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Alpheratz
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Earl C. Slipher
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Observational cosmology
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List of minor planets named after people
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Timeline of scientific discoveries
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Bruce Medal
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Howard P. Robertson
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List of galaxies
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Cosmic egg
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Astronomical spectroscopy
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Seyfert galaxy
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Galaxy rotation curve
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Active galactic nucleus
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Reflection nebula
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Cepheid variable
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Carl Wilhelm Wirtz
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Mulberry, Indiana
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Crab Nebula
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Lowell Observatory
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Andromeda Galaxy
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Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure
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Timeline of cosmological theories
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Hubble's law
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Redshift
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Nebula
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May 1
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History of physics
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Edwin Hubble
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Physical cosmology
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Big Bang
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