According to current scientific observation, our universe is expanding and it's rate is increasing. What does this mean to us? There are two options. Either it will continue to expand indefinitely and experience what is known as thermodynamic heat death or it will reach the threshold of elasticity and finally collapse upon itself prompting another iteration of the big bang/big crunch cycle. Either

way, the universe cannot itself be eternal and must have had a definitive beginning of it's existence. I'll explain why.

Indefinite expansion under the eternal universe hypothesis:

1. The process leading to thermodynamic heat death would have had an infinite duration of time to reach it's conclusion.

2. Our universe has not experienced thermodynamic heat death.

3. The eternal universe hypothesis cannot be true under the indefinite expansion model.

Oscillating universe model under the eternal universe hypothesis:

1.Our universe is currently in a state of expansion.

2. Assuming the universe were eternal, we would have an infinite number of iterations of this cycle.

3. To reach any iteration of the cycle, there would therefore be an infinite number of cycles that must be traversed.

4. Infinity cannot be traversed.

5. Therefore, the eternal universe hypothesis cannot be true under the oscillating universe model.

Either way you look at it. The universe have had a beginning of it's existence. Everything that begins to exist has a cause. Therefore, what caused the universe to exist? What criteria must be fulfilled in this cause?

Indefinite expansion under the eternal universe hypothesis:

1. The process leading to thermodynamic heat death would have had an infinite duration of time to reach it's conclusion.

2. Our universe has not experienced thermodynamic heat death.

3. The eternal universe hypothesis cannot be true under the indefinite expansion model.

Oscillating universe model under the eternal universe hypothesis:

1.Our universe is currently in a state of expansion.

2. Assuming the universe were eternal, we would have an infinite number of iterations of this cycle.

3. To reach any iteration of the cycle, there would therefore be an infinite number of cycles that must be traversed.

4. Infinity cannot be traversed.

5. Therefore, the eternal universe hypothesis cannot be true under the oscillating universe model.

Either way you look at it. The universe have had a beginning of it's existence. Everything that begins to exist has a cause. Therefore, what caused the universe to exist? What criteria must be fulfilled in this cause?

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