Edwin Powell Hubble Biography

Birth of Edwin Powell Hubble

Hubble announces that nearly all nebulae are associated with stars, and their illumination comes from star light

Hubble identifies Cepheid variables in Andromeda and shows it lies beyond the Milky Way

Discovers a class of variable stars known as cephids existing outside our own galaxy

Hubble establishes the distance to Cepheid variables in the Andromeda Galaxy, showing that Andromeda lies beyond the Milky Way and helping settle the Island Universe debate.

Hubble announces evidence that spiral nebulae are external galaxies, expanding the scale of cosmology

Settles the Island Universe debate which was concerned with whether the Milky Way and the Universe were synonymous, or was the Milky Way merely one in a plethora of galaxies that constitutes the Universe

Introduces the classification of galaxies as spirals, barred spirals & ellipticals

Hubble publishes the velocity distance relation that makes expanding relativistic cosmology observationally compelling

Hubble and Milton L. Humason formulate what is now known as Hubbles law by combining Cepheid distances to several galaxies with Vesto Sliphers measurements of the speed at which those galaxies recede from us

The redshift in light coming from distant galaxies is proportional to their distance, the law is first formulated by Edwin Hubble and Milton Humason after nearly a decade of observations. Discovers Hubbles Law

Hubble publishes the velocity distance relation showing that galaxies recede faster at greater distances

Discovers asteroid 1373 Cincinnati

Winner of the Gold Medal of the Royal Astronomical Society

Death of Edwin Powell Hubble

Cosmological redshift is now conventionally understood to be a consequence of the expansion of space; a feature of Big Bang cosmology

Baade's revised Cepheid calibration doubles the extragalactic distance scale and improves measurements used to estimate the expansion rate of the universe.

The Hubble Space Telescope (HST) also known colloquially as "the Hubble" or just "Hubble", is a space telescope that is carried into orbit by the Space Shuttle Discovery, named for the American astronomer Edwin Hubble

Astronomers unveil the Hubble Ultra Deep Field, a million-second exposure revealing galaxies seen when the universe was only several hundred million years old.