The Andromeda galaxy may be getting bullied by a smaller galactic neighbor, scientists find

Astronomers have identified a potential cause for Andromeda’s reduced star formation activity, pinpointing a smaller satellite galaxy as the culprit. Research indicates that the dwarf galaxy, dubbed M32, is exerting a gravitational influence on the larger spiral galaxy. This interaction appears to be responsible for slowing down Andromeda's star birth rate over the past 40 million years. The team believes this disruption stems from M32’s tidal forces stripping gas and dust away from Andromeda. Further study of this galactic encounter will continue to refine our understanding of how galaxies evolve.