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

For humans, the most important star in the universe is our sun. The second-most important star is nestled inside the ...

In the years following the launch of NASA's Hubble Space Telescope, astronomers have tallied over 1 trillion galaxies in the universe. But only one galaxy stands out as the most important nearby ...

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 ...

Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...

It definitively showed that Andromeda was far outside of our Milky Way. Edwin Hubble went on to measure the distances to many galaxies beyond the Milky Way by finding Cepheid variables within ...

Discover the stunning 2500-megapixel photomosaic of Andromeda, created from 600 Hubble photos, showcasing the telescope's ...

The Hubble Space Telescope has generated the most comprehensive survey yet of the Andromeda galaxy, the nearest galactic ...

New research confirms the Universe is expanding faster than models predict, deepening the Hubble tension and suggesting a ...