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Author Topic:   The expanding Universe and Galactic collisions
EighteenDelta
Inactive Member


Message 35 of 76 (430095)
10-23-2007 11:34 AM
Reply to: Message 27 by Spektical
10-23-2007 10:19 AM


Spektical writes:
Is it safe to say that gravity is a product of the universe? Also if the BB is not an explosion but an expansion, than what drives the expansion?
Vacuum appears to be the likely candidate for this. The expansion of the universe isn't just about the materials of the universe expanding, but the 'bubble' that contains the universe as well. (I am sure someone will crawl up my ass for that term.) As the outer reaches of the universe move away, there is emptiness that grows larger. Before someone else says it, I know there can never really be 'nothing' in physics(see below). That vacuum pulls the matter of the observable universe outward.
Dark energy may be vacuum | EurekAlert!
In modern physics, there is no such thing as "nothing." Even in a perfect vacuum, pairs of virtual particles are constantly being created and destroyed. The existence of these particles is no mathematical fiction. Though they cannot be directly observed, the effects they create are quite real. The assumption that they exist leads to predictions that have been confirmed by experiment to a high degree of accuracy. (Morris, 1990, 25)

"Debate is an art form. It is about the winning of arguments. It is not about the discovery of truth. There are certain rules and procedures to debate that really have nothing to do with establishing fact ” which creationists have mastered. Some of those rules are: never say anything positive about your own position because it can be attacked, but chip away at what appear to be the weaknesses in your opponent's position. They are good at that. I don't think I could beat the creationists at debate. I can tie them. But in courtrooms they are terrible, because in courtrooms you cannot give speeches. In a courtroom you have to answer direct questions about the positive status of your belief. We destroyed them in Arkansas. On the second day of the two-week trial we had our victory party!"
-Stephen Jay Gould

This message is a reply to:
 Message 27 by Spektical, posted 10-23-2007 10:19 AM Spektical has not replied

  
EighteenDelta
Inactive Member


Message 36 of 76 (430098)
10-23-2007 11:50 AM
Reply to: Message 34 by Spektical
10-23-2007 11:30 AM


Please don't be another "I don't understand it, ergo God (of the Christian bible)"
Because you don't understand something, it doesn't follow that its not understood.

This message is a reply to:
 Message 34 by Spektical, posted 10-23-2007 11:30 AM Spektical has replied

Replies to this message:
 Message 37 by Spektical, posted 10-23-2007 11:54 AM EighteenDelta has not replied

  
EighteenDelta
Inactive Member


Message 39 of 76 (430103)
10-23-2007 12:08 PM
Reply to: Message 1 by Spektical
10-22-2007 2:24 PM


Spektical writes:
Another question is: could the universe have originated from a gigantic Black hole, and if so could that be where this universe is heading to?
Your question starts with a false premise, that the big bang starts with a black hole. This is in fact wrong. FAQ in cosmology
FAQ in cosmology writes:
The Big Bang is really nothing like a black hole. The Big Bang is a singularity extending through all space at a single instant, while a black hole is a singularity extending through all time at a single point.
Viasat Internet New York | Satellite Internet Provider NY
from the provided link writes:
Sometimes people find it hard to understand why the big bang is not a black hole. After all, the density of matter in the first fraction of a second was much higher than that found in any star, and dense matter is supposed to curve space-time strongly. At sufficient density there must be matter contained within a region smaller than the Schwarzschild radius for its mass. Nevertheless, the big bang manages to avoid being trapped inside a black hole of its own making and paradoxically the space near the singularity is actually flat rather than curving tightly.
For a starting point.
Spektical writes:
I have mediocre knoweldge about astronomy and physics
Mediocre doesn't begin to describe you knowledge of Cosmology(and Astronomy) or physics.

This message is a reply to:
 Message 1 by Spektical, posted 10-22-2007 2:24 PM Spektical has not replied

  
EighteenDelta
Inactive Member


Message 45 of 76 (430134)
10-23-2007 1:43 PM
Reply to: Message 44 by Spektical
10-23-2007 1:03 PM


Just because the universe always existed, it doesn't follow that all the matter in the universe always existed. This seems to be the primary cause of your misunderstanding.
-x

This message is a reply to:
 Message 44 by Spektical, posted 10-23-2007 1:03 PM Spektical has replied

Replies to this message:
 Message 47 by Spektical, posted 10-23-2007 2:19 PM EighteenDelta has not replied

  
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