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Universe Has 100x More Entropy Than We Thought

eldavojohn writes "Previous estimates are now thought to skimp on the entropy of the observable universe. The researchers contend that super-massive black holes are the largest contributor of entropy. Since they contribute two orders of magnitude more than previously thought, the total of all the observable universe is correspondingly higher. The paper highlights (in gruesome detail) new issues that arise with these new calculations — like estimating us a little bit closer to heat death (moving entropy totals from 10^102 to 10^104 out of a maximum of 10^122)."

3 of 304 comments (clear)

  1. Heat Death by Anonymous Coward · · Score: 5, Informative

    Here's a link for anyone curious about the Heat Death of the Universe concept

  2. Re:Black holes contribute to entropy ? by Colonel+Korn · · Score: 4, Informative

    Everything that comes into a black hole comes back out eventually via Hawking Radiation. It goes in as a star or a chicken or a pistachio and comes out as random energy, which is a pretty clear increase in entropy.

    --
    "I zero-index my hamsters" - Willtor (147206)
  3. Re:Black holes contribute to entropy ? by Lemmy+Caution · · Score: 4, Informative

    "Order" and "disorder" are human perceptions, not states of matter and energy. Sometimes we perceive more order when there are clear differences in energy states, sometimes we perceive less

    To you, which is more ordered: a bowl of cherries next to a glass of water, or a completely smooth blend of all of them? The latter is more entropic. In the case of the room, replace the garbage bin with an incinerator, and the "empty" room (plus the stuff that used to be in it) is now in a more entropic state. The fact that you personally find it tidier isn't relevant. Assuming that you might have actually needed some of the stuff that we just burned, too, you might find it a rather poor solution to the problem of a messy room.