100 years ago, Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help. If we could go back 101 years, we would encounter a time when ...

The two keys to Edwin Hubble's breakthrough ... the most basic change in our view of the world since Copernicus 400 years ago. His results showing that the universe was expanding supported a ...

Four years after Leavitt’s death, Hubble revealed the ultimate impact of her work, reporting the Andromeda Nebula was around 10 times more distant than the Magellanic Clouds.

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 ...

Determining the expansion rate of the universe—known as the Hubble constant—has been a major scientific pursuit ever since 1929, when Edwin Hubble first discovered that the universe was expanding.