Exploring the Origins of the Big Bang Theory

In summary, the current observations don't agree with the most simple explanation for the origins of the universe, the big bang.
  • #1
KevinT
1
0
In school we are talking about the big bang, and it made me think. What if the cause of the bang was from a group of galaxies before us, very similar to us, and it was expanding just like our, but then we hit a "border", which caused a reverse action. Making that universe compact together and get so tight that it created a very large expansion, which we call the big bang theory.
 
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  • #2
Welcome to PF!

No one really knows why the Big Bang happened or if there was a "before", but one possibility is that the universe oscillates between expansion and contraction and "before" its current incarnation was another universe that collapsedin on itself, starting the cycle again.

However, at the moment it is believed that the universe is expanding too fast for that to be a likely model.
 
  • #3
My personal favorite theory on what happened before the big bang involves a truly infinite universe in which there are infinite big bangs that explode a certain points, and expand outward to eventually crash into each other. This allows for each big bang to accelerate as quickly as ours is right now, but also allows for a re-coallescense of matter at a certain point in the future to generate more big bangs.

Just a fun thought.
 
  • #4
playludesc said:
My personal favorite theory on what happened before the big bang involves a truly infinite universe in which there are infinite big bangs that explode a certain points, and expand outward to eventually crash into each other. This allows for each big bang to accelerate as quickly as ours is right now, but also allows for a re-coallescense of matter at a certain point in the future to generate more big bangs.

Just a fun thought.

Just a note, it's fine to hold your own opinions and beliefs about topics science hasn't (or cannot) shed light on, but don't delude yourself into thinking they have any predictive power. In the absence of very advanced and speculative physics and mathematics, it's just as justifiable to say that when two of these 'regions' collide they generate pink unicorns.
 
  • #5
I'm well aware :) Any speculation as to what happened before our big bang is only that. I apologize for my loose usage of the term "theory".
 
  • #6
is it possible that the big bang was caused from the first supernova which formed with every gas cloud there was creating an unimaginably large star
 
  • #7
blanksbyj01 said:
is it possible that the big bang was caused from the first supernova which formed with every gas cloud there was creating an unimaginably large star

In short, no. Nothing about this agrees with our observations and models of the universe.
 
  • #8
Why doesn't it agree with the current observations, what are they?
 
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  • #9
blanksbyj01 said:
Why doesn't it agree with the current observations, what are they?

Where to begin ...

You really should read some actual cosmology. You might find it interesting.
 
  • #10
blanksbyj01 said:
Why doesn't it agree with the current observations, what are they?

Read the following threads: https://www.physicsforums.com/forumdisplay.php?f=206
 
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  • #11
Usually, scientists assume the most simple explanation, until some evidence comes along that disproves it. At the moment, the most simple explanation (that is yet to be disproved) is the big bang theory. Which is why it is generally accepted.
 

Related to Exploring the Origins of the Big Bang Theory

1. What is the Big Bang Theory?

The Big Bang Theory is a scientific explanation for the origin and development of the universe. It suggests that the universe began as a single point of infinite density and temperature, known as a singularity, and expanded rapidly, eventually leading to the formation of galaxies, stars, and planets.

2. How was the Big Bang Theory developed?

The Big Bang Theory was developed through observations, mathematical calculations, and theoretical physics. Scientists studied the movement and composition of galaxies, the cosmic microwave background radiation, and the laws of physics to develop this theory.

3. What evidence supports the Big Bang Theory?

There are several pieces of evidence that support the Big Bang Theory. One of the strongest is the cosmic microwave background radiation, which is a faint glow of radiation that permeates the entire universe. This radiation is leftover from the hot, dense early universe and is considered a key piece of evidence for the Big Bang. Other evidence includes the abundance of light elements in the universe and the observed expansion of the universe.

4. What are some alternative theories to the Big Bang?

Some alternative theories to the Big Bang include the Steady State Theory, which suggests that the universe has always existed and is continuously expanding, and the Oscillating Universe Theory, which proposes that the universe goes through cycles of expansion and contraction. However, these theories have been largely discredited by scientific evidence and the Big Bang Theory remains the most widely accepted explanation for the origin of the universe.

5. How does the Big Bang Theory impact our understanding of the universe?

The Big Bang Theory has had a significant impact on our understanding of the universe. It has helped to explain the origin of the universe, the formation of galaxies and stars, and the evolution of the universe over time. It has also led to new discoveries and advancements in our understanding of physics, such as the theory of relativity and the concept of dark matter. The Big Bang Theory continues to be a topic of research and study, and has greatly shaped our understanding of the world around us.

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