What it is: Andromeda galaxy (M31)
Where it is: 2.5 million light-years away, in the constellation Andromeda
When it was shared: July 27, 2026
Andromeda is the only major galaxy in the universe that is speeding closer to the Milky Way as all the others rush away. Now, a new analysis of Hubble Space Telescope data hints that our galactic next-door neighbor may be winding down from a big burst of activity as it draws toward a possible collision with our galaxy.
The new study found that the Andromeda galaxy (M31) has been steadily slowing its production of new stars over the past 500 million years. The findings suggest that the galaxy is naturally winding down after a more active period, offering astronomers valuable clues about how large spiral galaxies evolve.
Andromeda is a gian...
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