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Is matter still being created?

  1. Aug 26, 2010 #1
    Is new matter still being created from energy in the universe anywhere, or is that something that only happened at the big bang? And is there a known way to create matter from energy?
  2. jcsd
  3. Aug 26, 2010 #2
    Hi there,

    Matter is being created all the time. Are you familiar with the "pair production" process? The process of creating an electron-positron pair from a >1.22MeV photon.

  4. Aug 26, 2010 #3
    Nope I wasn't aware of that, now I know the name it's a lot easier to find articles to read about it. So thanks for the info :)
  5. Aug 27, 2010 #4


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    The total energy content of the universe is fixed to the best of our knowledge. This does not preclude the conversion of energy to matter, or vice versa.
  6. Aug 27, 2010 #5


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    The reverse is also true. Matter gets "destroyed" in nuclear reactors. Or, more accurately, it is converted into a different form of energy.
  7. Aug 27, 2010 #6
    Hi there,

    But not only in nuclear reactors. The "destruction" of matter is a natural process, happening all the time. The natural terrestrial background radiation is the result of this natural process.

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