The big bang singularity?

In summary, they say that the Big Bang happened, but we don't know how big it was or what happened after it.
  • #1
Charles Brown
15
0
If we could find the point in space where the singularity happened would you expect to find abnormalities in space time? Is there a ground zero, where there is no relative motion where everything is rushing away?
 
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  • #2
There is no such point. The big bang singularity was a singularity across all of space at a single instant in time (as opposed to, say, a black hole singularity, which is a singularity at a single point in space across all of time).

The expansion of the universe isn't everything rushing away from a single point of explosion but rather the distance between everything growing over time, like a balloon being blown up.
 
  • #3
would you expect to find abnormalities in space time?

yes, even thought there is no single geometric point.

Is there a ground zero, where there is no relative motion where everything is rushing away?

no.

PS: it's not classical physics, either. But quantum mechanics doesn't provide the answer, either.
 
  • #4
Charles Brown said:
If we could find the point in space where the singularity happened would you expect to find abnormalities in space time? Is there a ground zero, where there is no relative motion where everything is rushing away?


When the Universe began it was completely crammed and uniformly with matter. There was no empty space whatsoever for a long time. Everyplace was like every other place.

Most scientists think the Universe was infinite when it began and still is. So it didn't begin at a point.

As far as I know there is no known reason that the Universe expands. It just does it.

We have no idea what it expands into. According to General Relativity if there is no matter or energy then there is no such thing as time or distance.

There isn't any edge or anything like that, so you can chose any point as the center. They are all the same.
 
  • #5
When the Universe began it was completely crammed and uniformly with matter. There was no empty space whatsoever for a long time. Everyplace was like every other place.

Most scientists think the Universe was infinite when it began and still is. So it didn't begin at a point.

Any sources supporting these statements?

There was NO matter at the bang...Nor was the universe infinite when it began. No one knows whther the universe is infinite or finite and unbounded now.

For example:
After its initial expansion from a singularity, the Universe cooled sufficiently to allow energy to be converted into various subatomic particles. It would take thousands of years for some of these particles (protons, neutrons, and electrons) to combine and form atoms, the building blocks of matter.

http://en.wikipedia.org/wiki/Big_Bang
 
  • #6
Patrick Powers
How big was this early universe that was crammed with matter?
 
  • #7
Remarkable claims require remarlable proof.
 
  • #8
Naty1 said:
... Nor was the universe infinite when it began. No one knows whther the universe is infinite or finite and unbounded now.

These statements are mutually contradictory. If the universe was not infinite when it began, then we DO know that it is not infinite now.
 
  • #9
Charles Brown said:
Patrick Powers
How big was this early universe that was crammed with matter?

There is no way to know the size of the universe currently. If might be infinite, it might not be. However the Big Bang model doesn't care whether the universe is infinite or not. Either way it still happened everywhere in the universe.
 
  • #10
Charles Brown said:
Patrick Powers
How big was this early universe that was crammed with matter?

Nobody knows. It could have been infinite, could have been finite. In such a situation time and space are so distorted that our theories don't give answers about size, and it is not even clear what the questions should be. So I don't worry about it much.
 
  • #11
Drakkith said:
There is no way to know the size of the universe currently.

It is possible to measure the curvature of the Universe. From this it is calculated that the Universe is at least three times the size of the visible Universe, and most think it is considerably more than that.

To show that the Universe was infinite you would have to calculate a curvature of exactly zero. No way of measuring and calculating that number to infinite precision presents itself. No way of calculating ANY number that involves measurement to infinite precision presents itself.

t is possible that someone someday could convince the world that a non-flat universe leads to a contradiction, so it must be flat/infinite QED.
 
  • #12
Drakkith said:
Either way it still happened everywhere in the universe.

The Big Bang happened in the universe?

Hmmmm... :uhh:




OCR
 
Last edited:

1. What is the Big Bang singularity?

The Big Bang singularity is a theoretical event that is believed to have marked the beginning of the universe. It is the point at which all matter and energy in the universe were compressed into a single, infinitely dense and hot state.

2. How did the Big Bang singularity happen?

The exact cause of the Big Bang singularity is still unknown, but it is believed to have been triggered by a rapid expansion of space known as inflation. This caused the universe to rapidly expand and cool, leading to the formation of matter and energy.

3. Was there anything before the Big Bang singularity?

The concept of "before" the Big Bang singularity is difficult to understand, as time and space as we know it did not exist at that point. Some theories suggest that there may have been a previous universe that collapsed in on itself, leading to the Big Bang. However, this is still a subject of debate and research.

4. What evidence supports the existence of the Big Bang singularity?

One of the main pieces of evidence for the Big Bang singularity is the cosmic microwave background radiation, which is a remnant of the intense heat and energy released during the event. Other evidence includes the expansion of the universe and the abundance of light elements such as hydrogen and helium.

5. How does the Big Bang singularity relate to the theory of evolution?

The Big Bang singularity is not directly related to the theory of evolution. However, the expansion of the universe and the formation of stars and galaxies that occurred after the Big Bang allowed for the development of complex organisms and the process of evolution to take place.

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