1924 ⟶ Hubble Discovers the Milky Way is One of Many Galaxies
Edwin Hubble: the discovery that the Milky Way is just one o...
Year
1912
1923
1924
🔭 Leavitt Discovers Period-Luminosity Relation for Cepheids
Henrietta Swan Leavitt discovers the period-luminosity relation for Cepheid variables, where the intrinsic brightness of a star is proportional to its luminosity oscillation period. It opened a whole new branch of possibilities of measuring distances on the universe, and this discovery was the basis for the work done by Edwin Hubble on extragalactic astronomy.⟶
AstronomyCepheid VariablesLeavittCosmologyDistance MeasurementExtragalactic Astronomy
United States🌠 Hubble discovers galaxies beyond our own
Edwin Hubble discovers a Cepheid variable star in the "Andromeda Nebula" and proves that Andromeda and other nebulas are galaxies far beyond our own. By 1925, he produces a classification system for galaxies.⟶
HubbleGalaxiesCosmologyAndromedaAstronomy20th Century AstronomyExpanding Universe
United States🔭 Hubble Discovers Galaxies
Edwin Hubble: Galaxies discovered⟶
AstronomyCosmologyGalaxiesHubbleExtragalactic Astronomy20th Century AstronomySpaceUniverse
United States🌌 Hubble Discovers the Milky Way is One of Many Galaxies
Edwin Hubble: the discovery that the Milky Way is just one of many galaxies⟶
AstronomyCosmologyGalaxiesMilky WayHubbleExtragalactic Astronomy20th Century AstronomyUniverse
United States