In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

This data set is revolutionizing our understanding of how Milky Way-like galaxies form and evolve.” This panorama started with the Panchromatic Hubble Andromeda Treasury ... the southern half of ...

His measurements marked the end of the Great Debate about the Milky Way's size and the nature of the nebulae. Hubble wrote about his discovery to Harlow Shapley, who had argued that the Milky Way ...

The Hubble Space Telescope has provided the most detailed survey of the Andromeda galaxy, revealing new clues about its ...

Prior to that, astronomers had long thought that the Milky way encompassed the entire universe. Overnight, Hubble's discovery ... mapped by the PHAT survey. The combined programs collectively ...

Astronomers have released the most comprehensive photograph of the Andromeda galaxy, which contains over 200 million stars. This astounding accomplishment sheds light on the galaxy's development and ...

The Andromeda galaxy is approximately 2.5 million light-years away from the Milky Way. The observations recorded by Hubble yield new clues about the history of Andromeda, which looks markedly ...

His measurements marked the end of the Great Debate about the Milky Way’s size and the nature of the nebulae. Hubble wrote about his discovery to Harlow Shapley, who had argued that the Milky ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Circa 1945: Astronomer Dr. Edwin Powell Hubble sitting in a chair at a desk reading a journal.