31 replies to this topic

[Jessem]

KRS-One, on Jul 26 2009, 03:51 PM, said:

No.  A super nova imploding is not what started the big bang.  At one point the universe existed as an infinitely dense, infinitely "hot" state (in other words it was incomprehensibly small and full of an equally large amount of energy).  It then began expanding very, very rapidly and cooling as energy filled a larger and larger physical space.

It is in that that entropy becomes apparent.  As the universe expands, the same amount of energy is used to fill ever larger spaces.  Once the universe spreads itself over an incredible distance, energy will be too scattered to be used for any processes and all things will stop.

edit:  This is all really simplified, obviously.  These are just the general concepts, and so if any one thinks I'm being overly vague, go a head and step on in.

Yes but the universe didnt just come from nothing! There had to be another "existance" of energy present to cause this effect other than just simply expanding and nothing to heat the source.

[KRS-One]

Jessem, on Jul 26 2009, 06:05 PM, said:

Yes but the universe didnt just come from nothing! There had to be another "existance" of energy present to cause this effect other than just simply expanding and nothing to heat the source.

Not really, no. There doesn't need to have been an outside factor for the big bang to have occured.  An outside action would mean that matter was transformed in some way, which is not true.  Matter was being created, brought into existance, not being affected by factors outside of the universe.
Additionally, there may not have been a "before" the big bang, because with the big bang creating all matter it also created space time.  There was no "before" because there was no time.