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Whose observations revealed that the universe is expanding?

ScienceAstronomy

Quick Answer

Edwin Hubble is credited with showing that distant galaxies are moving away from us. His 1929 work helped establish the expanding universe.

The Full Story

American astronomer Edwin Hubble used observations of galaxies and their redshifts to show that the farther away a galaxy is, the faster it appears to recede. In 1929, this relationship became known as Hubble’s law. His findings provided key evidence that the universe is expanding. Hubble’s work also transformed the study of galaxies and the scale of the cosmos.

Key Facts

1.Key paper published in 1929
2.Named for Edwin Hubble
3.Distant galaxies show greater redshift

YouTube Angle

Suggested video title for this topic:

"The discovery that turned the universe into a story of expansion."