The Andromeda galaxy is bigger than Milky Way galaxy.
The main difference between Andromeda galaxy and the Milky Way galaxy is their sizes. The Andromeda galaxy is bigger than Milky Way galaxy because the Andromeda galaxy comprises of about a trillion stars while on he other hand, the Milky Way contains about 300 billion stars. The Milky Way and the Andromeda galaxy are also similar to each other in their shape which are giant spiral galaxies.
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