Vesto Melvin Slipher1912
Slipher measures a large redshift for the Andromeda nebula, beginning the observational path toward an expanding universe
United States of America · Science / Astronomy. Chronological records rendered directly from the World History Database.
Slipher measures a large redshift for the Andromeda nebula, beginning the observational path toward an expanding universe
Humason begins measuring faint galaxy spectra that later strengthen Hubbles velocity distance relation
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