Hubble's study reveals Andromeda experienced major galactic collisions, unlike Milky Way. Its satellite galaxies show unusual ...

"Everything scattered in the Andromeda system is very asymmetric and perturbed. It does appear that something significant ...

Am astrophotographer has now unveiled the most breathtaking photo of the Andromeda galaxy we've ever seen, and he took it ...

Located 2.5 million light-years away, the majestic Andromeda galaxy appears to the naked eye as a faint, spindle-shaped object roughly the angular size of the full moon. What backyard observers don't ...

A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.

The Hubble Space Telescope revealed that the Andromeda Galaxy’s ecosystem differs from our Milky Way’s. This shows how these ...

Nevada is one of very few places left in the country where there is so little artificial light the Milky Way is visible to ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

Dozens of dwarf galaxies swarming around the Andromeda Galaxy like bees have been caught on camera by the Hubble Space Telescope, which took more than a thousand orbits of the Earth to take enough ...

Some of Andromeda's dwarf galaxies are particularly puzzling, though. Dwarf galaxies around the Milky Way, for example, either stopped forming stars billions of years ago, or have only recently ...