Andromeda Galaxy Swallowed Many Dwarf Galaxies During Its Lifetime

An analysis of data from the Pan-Andromeda Archaeological Survey (PAndAS) has uncovered two major episodes of accretion, probably separated by billions of years, in which the Andromeda galaxy, a neighbor to our Milky Way Galaxy, gobbled up several small galaxies.

Natural oscillations from ancient star reveal age of galactic

My 29 hour exposure of the Trianglum Galaxy taken with a 14.5

Are there galaxies that have smaller galaxies orbiting them? - Quora

Andromeda Galaxy Archives - Page 2 of 5 - Universe Today

Discovered: Milky Way's long-lost galactic sibling

Are there galaxies that have smaller galaxies orbiting them? - Quora

Huge galaxies grow by eating nearby smaller ones – Sciworthy

NASA Chat: Giant Black Holes in the Early Universe - NASA

Andromeda Galaxy - Wikipedia

Andromeda Galaxy: Most Up-to-Date Encyclopedia, News & Reviews

Milkdromeda – sciencesprings

Are there any galaxies closer to the Milky Way than the Andromeda

The Secrets of Our Cosmic Home Revealed, by M.A. Sonncraft