One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate.’ Hubble transformed astronomers’ understanding of the universe.

Thirty-five years ago, the Hubble Space Telescope was launched into orbit. It's been sending back galactic data and images ever since.

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...

Edwin Hubble was the creator of the great space tool, which has taken countless worldview-shattering photos with its equipped ultraviolet, visible, and near-infrared light-measuring instruments.

The original version of this story appeared in Quanta Magazine. Nearly a century ago, Edwin Hubble discovered that the universe is getting larger. Modern measurements of how fast it is expanding ...

Yet, a century ago, its discovery by Edwin Hubble opened humanity's eyes as to how large the universe really is, and revealed that our Milky Way galaxy is just one of hundreds of billions of ...

Scolnic thinks that these odd results—first the renewed Hubble tension, nay, crisis and now the worry about dark energy’s true nature—are powerful hints that something is missing from our ...

That Rich was presenting the story of Edwin Hubble at the January 2025 AAS meeting was symbolic, for it was at the 33rd meeting of the AAS, a century ago on January 1, 1925 in Washington, D.C., that ...

A century ago, humans didn't know other galaxies existed. Here's how Edwin Hubble changed that view.