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Is the energy and mass of the universe constant?

  1. Aug 17, 2008 #1
    Is the energy and mass of the universe constant??

    is the energy and mass of the universe constant??

    if so does this mean that the total speed of all matter, if totalled, is the same irrespective of time??

    if not, does it mean the sum total of speed of matter will increase or reduce correspondingly to increase or reduction of energy??

    or is such an assumption impossible without a static point to measure speed??
     
    Last edited: Aug 17, 2008
  2. jcsd
  3. Aug 17, 2008 #2
    Re: Is the energy and mass of the universe constant??

    Of course the speed will not be the same, as speed is a scalar. Velocity, on the other hand, is a vector and is more what I think you had in mind. Mass and energy in the universe remains constant under all current "Accepted" cosmological models (although not some of the newer proposed theories).

    V
     
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