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Does the fact galaxies are colliding go against the Big Bang theory of everything moving away from one another like an inflating balloon?

It would appear that if the Big bang theory is primarily based on the observation that everything is moving away from each other and a bit of back ground radiation. But if Galaxies are in fact colliding then surely this negates the big bang theory.

  • Sep 22 2012: "Does the fact galaxies are colliding go against the Big Bang theory of everything moving away from one another like an inflating balloon?"

    No, galaxies are grouped in clusters within which gravity is stronger than the "dark energy" that works to expand the universe. These clusters move away from each other but everything within the clusters will remain together for a very long time. Eventually the expansion of the universe will have sped up to such an extent that clusters will be ripped apart, then galaxies, then solar systems, then planets, then stars, then molecules, then atoms, then nuclei and eventually protons, neutrons and black holes, until only fundamental particles remain.
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    Sep 22 2012: Gotta take Gravity into consideration.
    • Sep 23 2012: i think gravity is accually slowing down the rate of expansion
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    Sep 22 2012: Actually I would suggest that the big bang did happen and is continuing to happen about 100 per year. Currently we understand them as Gamma Ray Burst but really we have no clue what going on. They completely destroy our current physics (e=mc2) and so scientist have made them fit our current physics. To me they are what create the galaxies much on the same thought as the big bang but instead of just one big bang creating the whole universe . Each galaxy is have there own big bang in the form of these gamma ray burst. The truly funny thing is science has already discover that they are coming from billions of light years away from galaxies with rapid star formation. But are to stuck on the idea of destruction, instead of creation
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    Gail .

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    Sep 21 2012: No, it doesn't negate Big Bang.

    Space is curved and galaxies have ENORMOUS gravitational fields. They aren't just a clump of stars. The stars are part of a larger, unseen structure. Such occurrences will happen in curved space. In fact, our Milky Way is expected to collide with Andromeda in several billion years.