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Big bang and black holes?

  1. Jun 15, 2009 #1
    I've been watching videos and reading about black holes and big
    bang and many questions puzzle me. But here's one that I don't really get it.

    How the big bang even started since it had all
    mass of the universe in it. Therefore its gravitational pull in itself
    would surpass any mass of any black hole in the entire universe.
    In other words, why the big bang did not generate the most
    massive black hole ever instead of expand into the universe?

    thx!
     
  2. jcsd
  3. Jun 15, 2009 #2
    This may help - but you will likely have to dig. I would think that once you start digging you will love what you find.

    This "guy" seems to be one of the most down-to-earth scientists around. He has great ways of making people understand things that may otherwise be too complex or beyond many peoples ability to comprehend.

    http://mkaku.org/" [Broken]
     
    Last edited by a moderator: May 4, 2017
  4. Jun 15, 2009 #3
    i was reading one of his books. Will take a look again, but I found this article from a similar thread than mine:

    http://www.haydenplanetarium.org/tyson/read/essays/nathist/greateststoryevertold [Broken]

    it seems like in the beginning of everything gravity did not exist yet.

    I wonder if there are astrophysics student out there to confirm the article above. Or else why right after gravity was created it did not act instantly to form a big crunch, instead of the universe.
     
    Last edited by a moderator: May 4, 2017
  5. Jun 21, 2009 #4
    interesting question. there are many reasons, but the main reason for such would have to be inflation. at the moment of the big bang, the fundamental forces were unified, so the energy and spacetime around it could expand faster than light. this is a watered down version of the theory but it does explain why. look if up if you want to know more.
     
  6. Jun 23, 2009 #5
    noone really knows much about the big bang. many people have different theories about it so its basically just an assumption.
    but once i did ask my physics teacher that "what was before the big bang?" ofc its a stupid question, because you cant answer it. before the big bang there were no dimensions yet, therefore no gravity. thats why it didnt collapse.
     
  7. Jun 25, 2009 #6
    Not that this helps you but:

    Something bothers me, string theory says that to branes, or 2 universes crashed into each other and created the big bang. Wouldn't the 2 branes get any scratches or rips? Because string theory says that these branes can be bent in different shapes, but not riped. It's just strange that so much force doesn't cut any of the branes. That's only my hypothesis though. I guess i'll have to dig on this one. If there is anything to dig through.

    Maybe that wasn't too well thought through, and it's maybe a stupid question. But still, the only stupid question is the one you don't ask! right? As i said when i joined this forum, im your daily resource for meaningless posts!
     
  8. Jun 25, 2009 #7
    Correct and only once the universe had entered the quark and hadron epoch, did we really have the dissemination/de-unification of the 4 fundamental forces. This is well after inflation (when the universe's scale factor increased exponentially).
     
  9. Aug 23, 2011 #8
    Since the Big Bang created all the matter & and the universe, it would of created gravity as well. That much force of the bang would break through any gravity field that's why it started coming back together after the "dust" settled?
     
  10. Aug 23, 2011 #9

    Chronos

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    Gold Member

    Wow, that is a weird idea.
     
  11. Aug 24, 2011 #10
    You make an interesting point, AOM.
     
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