Big Bang and Cosmic Theory

[James S]

I just got this US News special edition "Mysteries of Outer Space" and it's got some really stellar articles in it, but I was just thinking about the big bang ... the universe would have to have a center point.

When a star goes super nova there's an event horizon at which everything before that point does not possess the velocity to escape the star's gravity and it collapses back in on the star. If the Universe exploded outward in a big bang then there would be an event horizon in the center of the Universe which held a massive and super heated black hole with massive amounts of stars, nebulae, and galaxies all spiralling into it, just like our Galaxy's black hole at the center. So... where is it? We've calculated the center of the universe based on red shift of other galaxies around us and their direction (since everything would be moving nearly perfectly outward from the center, save gravity and dark matter interference). So where's that center of the Universe?

And, if the farther we see in outer space the older things become, since the speed of light in a vaccuum is finite, then the Universe is actually very much infinite because the "darkness" we see as far out as we can see is actually just because the light of that regions has yet to reach us. So the sky one day will become infinitely bright when time reaches such an apex as that the speed of light against the speed of the Universe's expansion allows the light to travel faster than time, which will happen because an object in motion continually accelerates, so even if the speed of light is constant the speed of matter is not. It's the two trains colliding math equation, the collision being the point at which the speed of the two "trains" combined becomes faster than the speed of time.

What do y'all think? Am I crazy? Should I spend more time studying for my History mid-term?

[sandmann]

I've heard the black-hole-as-center-of-universe theory before, and with little to no knowledge of what I'm talking about, here's my theory. I think there very well could be a black hole (or potential black hole) at the center of the universe, but the universe is constantly expanding... How is this possible? Well, as every star collapses, there is a certain amount of time it expands or whatever before an event horizon occurs. The bigger the supernova, maybe the longer the time? If a supernova really did create the universe, then it would have had to be incomprehensibly massive, therefore the time it takes for an event horizon to form after this supernova would be incomprehensibly long. If this theory is correct, the universe will end some day as it is pulled back into the singularity of the central black hole. This also fits into my naive and unsupported theory that at every black hole, the singularity is another 'big bang' of a smaller scale waiting to happen. Maybe this is the mother of all min-big-bangs.

It's fun to speculate, but I really have no idea what I'm talking about. I don't think anyone can be crazy when theorizing about this kind of stuff, cuz none of us have the expertise to come up with an underriding theory of the universe.

[chuck]

but as a christian you shouldn't even contimplate that... aren't i correct? (i'm being serious, not sarcastic)

[James S]

... now that's interesting, sandmann. The mass of the initial big bang point would be infinite if the Universe is infinite, and thus the Universe would expand for an infinite length of time (no event horizon). But that would mean that there is a point in space with infinite mass and infinite energy from which stuff is spewing and will be spewing for an infinite amount of time... since that is not the case, as there's not tons of crap flying at us from an infinitly bright point in the sky, then Universe is finite. Being finite, and being to the point of losing its massively bright center (such as in a super nova) the event horizon would have already formed ... and thus we'd be seeing a very bright black hole in the center of the Universe with tons of junk flying into it.

... so ... I've just talked myself out of the entire Big Bang theory

Chuck, you're ignorant. I couldn't come up with a reply to your question even if I wanted to.

[sandmann]

Moose, singularities are neither infinitely bright nor infinitely dark. We have no idea what they are, since they lie at the end of black holes (which make sort of a cone shape in time-space continuum if I remember correctly) and exist outside of our demension of sight. Also, the big bang theory states that the universe came out of a singularity, and as such the singularity must be weakened (as you cannot subtract mass from infinity and have it remain infinity).

As the universe continually expands, and there is evidence that it is doing so, the pressures will become greater and eventually an event horizon will form. This, of course, is based on the assumption that every supernova must have a breaking point before the event horizon forms. If this is true, we haven't yet reached that point, and only will in the distant future, presumably after humans wipe themselves out.

My head hurts and I doubt I made sense, but there it is.

[James S]

But the singularity, the center of the Universe, for the Universe to be infinite in size the singularity would have to be infinite in energy. Light is a form of energy. It would emit an infinite amount of light. We'd all be blind and everything would be white

And the singularity of a black hole is sucking in the light produces from all the energy of everything in the Universe, so it's bright, too.

[Paul]

no chuck, unlike proper christians, moose picks and chooses which parts of the religion he subscribes to.

[James S]

You'd criticize me no matter what I'd do, so I don't know why I should care what you say.

[David Horn]

The universe isn't infinite, just very big. There's a difference.

There is no new matter or energy being created in the universe - in fact, it was recently proved that the size of the explosion and the amount of mass in the universe was sufficient to cause it to expand forever. So, there will be no big crunch.

[Jadam]

STFU

[James S]

Hawking thought time would go in reverse during a big crunch that's so stupid.

[sandmann]

Moose, tell me, are black holes infinitely bright? No. Therefore either singularities are not infinitely bright or they are out of our plane of sight.

And I'm not sure anything can be proven in the regard of the expansion of the universe... How can you prove as absolute truth that the universe will expand forever?

Also, how can you say that time reversal during a "big crunch" is stupid? Have you ever been in a "big crunch?" Didn't think so.

I still like my theory

[eminefes]

God created the big bang....

That's my theory.

[Caesar]

Forgive if I sound like an amatuer here, my only background in physics is what I learn on my on and my AP Physics course.


Anyway, firstly, I'm catholic. I know, I know, I shouldn't believing that the universe was created from a big bang, but I believe that it was(God saying let their be light and BOOM, see, a big bang, lol). Anyway, after the big bang occured the universe expands outwards right? True, but since gravity is universal, eventually the universe will get so large that all of the combined gravity in the universe will pull itself backwards and eventually crush itself out of existence. What do you guys think?

[James S]

Sandmann, not every singular has infinite mass, like my theoretical big bang singularity.

caesar, black matter makes sure that this doesn't happen.