Thought Provoker
Posts: 530
Joined: April 2007
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Thanks for having this thread Lou.
At the risk of appearing lost in hero worship...
I have noticed Penrose has been having some interesting ideas lately on the origins of the Big Bang.
Here is a video of a recent lecture...
http://www.youtube.com/watch?v=OutKE3tyG94
As I understand it, the short version is that because of the discovery of Hawking Radiation the presumption is that near the end of the universe there will be nothing left but evaporating Black Holes. And once the last of the Black Holes totally evaporate all that will be left is photons traveling along the null geodesics which literally means the end of time.
Again, if I am understanding correctly, Penrose is suggesting this null-time state matches the Big Bang state. Therefore, another Big Bang occurs and another universe is started.
Penrose is suggesting that this idea might be supportable by analysing the Big Bang echo for ripples corresponding to point sources of photons. Similar to ripples in a pond caused by raindrops.
I welcome the opinions of others (especially Oleg).
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