# Oct. 5th, 1923: Hubble discovers galaxies beyond the Milky Way

Oct. 5th, 1923: Hubble discovers galaxies beyond the Milky Way

via [Astronomy.com](https://www.astronomy.com/today-in-the-history-of-astronomy/oct-5th-1923-hubble-discovers-galaxies-beyond-the-milky-way/)

Edwin Hubble discovered galaxies beyond the Milky Way on October 5th, 1923, by observing changes in the brightness of a star in the Andromeda Nebula. This historic finding expanded our understanding of the universe and its vast scale, inspiring generations of sky-watchers and astronomers. As a result, stargazers can now appreciate the Andromeda Galaxy, a prominent sight in the night sky, as a separate galaxy beyond our own. Sky enthusiasts can look for the Andromeda Galaxy on clear fall nights in the Northern Hemisphere.

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Updated: 2026-10-06T23:00:20.141Z