Paradox of the Expanding Universe: Debunking the Big Bang Theory

In summary, the question of whether or not the universe is infinite does not affect its ability to expand. The density of the universe, represented by the parameter omega, plays a role in determining if it will continue to expand. Additionally, the shape of the universe and the influence of dark energy also contribute to the rate of expansion. The Hubble parameter measures the rate of expansion, while dark energy is the term used to describe the unknown force causing the acceleration of the expansion.
  • #1
Wellsi
80
0
My dad asked me the other day... if space orginated from a big bang as we think... does that not mean it is expanding outwards? How can it be expanding if it is infinite already.

I couldn't answer him there and its a serious paradox in thinking. So where is he wrong and what's the go with that?
 
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  • #2
It may or may not be infinite, but that doesn't affect whether or not it can expand. Infinity is not a number. It isn't a limit.
 
  • #3
infinity is just a concept right... wow i actually learned that from maths. :)

The density affects whether it expands or not right? Omega is less than/ equal to or greater than 1 idea... and the triangle drawn onto that sheet of paper?
 
  • #4
Wellsi said:
The density affects whether it expands or not right? Omega is less than/ equal to or greater than 1 idea... and the triangle drawn onto that sheet of paper?

The gravitational influence of everything in the universe decides whether or not it keeps expanding (which it will) What you're talking about is, i think, the shape of the universe (saddle, sphere or flat). Dark energy gives us how fast it's expanding.
 
  • #5
Aschere said:
Dark energy gives us how fast it's expanding.

Not quite. The Hubble parameter tells us the change in scale factor (ie. the rate of expansion). Dark energy is the label given to whatever it is that is causing the expansion to accelerate at the present time.
 

FAQ: Paradox of the Expanding Universe: Debunking the Big Bang Theory

What is the "Paradox of the Expanding Universe"?

The "Paradox of the Expanding Universe" refers to the observation that the universe appears to be expanding at an accelerating rate, despite the force of gravity pulling matter together. This goes against the expectations of the Big Bang Theory, which predicts that the expansion of the universe should be slowing down over time.

How does this contradict the Big Bang Theory?

The Big Bang Theory states that the universe began as a singularity and has been expanding ever since. However, the theory also predicts that the force of gravity should eventually slow down and stop this expansion. The observation of an accelerating expansion goes against this prediction and poses a challenge to the Big Bang Theory.

What evidence supports the "Paradox of the Expanding Universe"?

Scientists have used a variety of measurements, including observations of supernovae and the cosmic microwave background, to determine that the expansion of the universe is indeed accelerating. This evidence has been confirmed by multiple studies and is considered to be strong support for the "Paradox of the Expanding Universe".

How have scientists attempted to explain this paradox?

Some scientists have proposed the existence of a mysterious force called "dark energy" to explain the accelerating expansion of the universe. However, the nature of dark energy is still not well understood and its existence has not been confirmed. Other theories have also been proposed, but none have fully explained the paradox.

Does the "Paradox of the Expanding Universe" disprove the Big Bang Theory?

No, the "Paradox of the Expanding Universe" does not disprove the Big Bang Theory. While it presents a challenge to the theory, there is still a substantial amount of evidence that supports the Big Bang model. Scientists continue to study and explore potential explanations for this paradox, and the Big Bang Theory remains one of the most widely accepted theories for the origin and evolution of the universe.

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