Who are you? Philosophy:

AeroEngineer3141
Wed, 15 Jul 2009 20:45:27 +0000

Okay so lets say the big bang created the universe, even if this created time and such, how did it begin?



The Big Bounce model postulates that that the universe can only expand so much, until it starts receding to an infinitesimally tiny point. Then, conditions are right of another Big Bang. This would suggest that the nature of the universe is cyclic, and thus has no beginning. It has an end though, because the Second Law of Thermodynamics commands that entropy continues to rise regardless.

This is a hugely debated topic in physics, and as such offers a multitude of explanations. Some better than others.



How can space expand into nothing?

I have no scientific backing on this question, so I’ll just give you this thought experiment.

The vacuum of space is theorized to be immersed in two fields: the higgs field (which consists of higgs bosons) and the gravitational field (which consists of gravitons). Calculuations of the total mass of the universe suggests that there is (much) more than what the observable universe has to offer - we get dark matter and dark energy. Finally, quantum physics agrees that, at small (plank length) sizes, the universe can be seen to oscillate and fluctuate - quantum jitters.

Now, emptiness is the lack of all this. No tiny vibrating strings, no fields or particles, no dark energy. And nothing has to create this emptiness, because it has no mass/energy and thus complies with the law of conservation of energy. This emptiness is completely different from the pseudo-emptiness of our universe. Therefore, like a balloon expanding into our air, you can imagine a (not-so-empty) universe expanding into an infinite nothing.

I don’t think that was a very strong argument, so take it for what it’s worth.



Anyway the big bang came from four dense gases



Not gases, particles. Fully formed atomic structures would be weird at that stage of development.