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Physical constants changed?

  1. Jun 24, 2010 #1
    What would happen to the universe if the physical constant of Big G was changed?
  2. jcsd
  3. Jun 24, 2010 #2


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    We would be in a very different Universe - probably one which wouldn't exist for very long.
    G is a fundamental constant which relates mass space and time in our theories.
    I do wonder whether the evidence for the existence of Dark Energy and Dark Matter, and all of that is a very open question at the moment afaik. Perhaps it could be explained by G not being actually a constant but a function of distance.
    I won't fall into the trap of saying what the situation 'really is' but perhaps a variable G could give a model (for them as are smart enough) which does without Dark Stuff.
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