To form the one we live in.It has been observed to explain the big bang Thierry that at the same all other galaxy’s are moving away from us at a immense speed.If this is so why are we as a galaxy are still in the path of the Andromeda galaxy?
2 Responses to “Our Galaxy is made up of several smaller Galaxy’s that collided with each other?”
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Yes, the universe is still expanding and galaxies are moving away from each other, although exceptions for galaxies attracted to each other by gravity. Our Milky Way galaxy and the Andromeda galaxy are attracted to each other by their gravitational pull.
It is thought now that all large galaxies are the result of “collisions” and amalgamations of smaller ones. Whilst it is true that overall, the Universe is expanding, many bodies are gravitationally bound. This results in our galaxy, called The Milky Way, and the Andromeda galaxy, along with about 30 plus smaller ones forming what is called The Local Group. The Universe is full of such groups, which in turn can make up yet larger bodies (Look up, Sloan Great Wall). This does not contradict the fact that the Universe is constantly expanding.