The Mystery of the Universe's Origin

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Discussion Overview

The discussion revolves around the origins of the universe, specifically questioning the nature of its initial state and size. Participants explore concepts related to cosmology, including the implications of redshift and the idea of singularities, while also addressing the limitations of current physics in describing such conditions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions whether the universe's initial point was smaller than the Planck length or potentially undefinable.
  • Another participant expresses confusion regarding the initial question, indicating a lack of clarity in the discussion.
  • A participant explains that the concept of the universe starting as a small point is derived from observations of redshift, suggesting that the universe is expanding over time.
  • It is noted that as one traces the expansion back in time, the universe would reach a state described as a singularity, where current physics may not apply.
  • There is a suggestion that questioning the scale of the universe's initial size may be more relevant to specialists in string theory or particle astrophysics.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as there are differing interpretations of the initial conditions of the universe and the implications of those conditions on current physics.

Contextual Notes

The discussion highlights limitations in understanding the initial state of the universe, particularly regarding the adequacy of current physical theories to describe conditions at or below the Planck scale.

munky99999
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why the Universe was at a small point? Is this point like super small like.

Plank length
Googelplex^googelplex

Or just any size smaller then Planck Length? To be undefinable.

Why couldn't the universe just all of a sudden be created right where it is, in all the same motions as everything is in.
 
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Im sorry i don't understand want you point is.
regards
jamie
 
The main reasoning behind the idea that the universe was once a small point is based on the redshift. The shifting of light toward the red end of the spectrum is taken by most coamologists to mean that the stars emitting this light are moving away from us. The more distant a star is, the more red-shifted its light; meaning that the more distant stars are moving away faster. This produces the image of a universe that is expanding. If the universe is exanding, then it is bigger today than it was yesterday. Therefore, it was smaller yesterday than it is today, and the day before yesterday it was smaller still.

If this line of reasoning is taken back far enough, we get to a point when the universe was very very small.
 
Till you get to a point where the universe ends up being so small that the physics we have is inadequate to explain it. Such a state is referred to as a singularity.

To actually question the scale of size is meaningless unless you are a string theorist or particle astrophysicist.
 

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