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Cod
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I heard there is a theory in physics that proves that everything has a beginning. Is this true? If so, does anyone know the exact name of the theory?
Any help is appreciated.
Any help is appreciated.
Originally posted by Cod
I heard there is a theory in physics that proves that everything has a beginning. Is this true? If so, does anyone know the exact name of the theory?
Any help is appreciated.
Originally posted by jeff
General relativity says that spacetimes satisfying certain physically reasonable assumptions must have begun a finite time ago in a "singular" state, that is, a state that can't be described by general relativity. It's thought that our universe arose from such a state via the big bang.
Originally posted by pmb
The Big Bang theory can't go back to exactly t = 0. At that point there's a lot of uncertainty as to the physics at that point.
Originally posted by pmb
There is a theory that states that something came before the big bang - it's called the pre-big bang theory.
Originally posted by jeff
Yes, this is correct. Nonetheless, the phrase "a finite time ago" is the one used in framing the singularity theorems, and I was only trying to indicate that for this reason, GR may have been the theory that the poster was looking for. But again, your statement as I've quoted it is of course correct.
If causation breaks down, then so does the notion of "before": Pre-big bang theory is more ill-defined idea than bonafide scientific theory.
The theory that everything has a beginning is known as the "Big Bang Theory". It proposes that the universe began as a singularity and has been expanding ever since.
There are several pieces of evidence that support the theory of a beginning for everything. These include the cosmic microwave background radiation, the expanding universe, and the abundance of light elements in the universe.
Yes, the Big Bang Theory is currently the most widely accepted explanation for the origin of the universe. It is supported by a vast amount of scientific evidence and is the cornerstone of modern cosmology.
No, the Big Bang Theory cannot be proven definitively. However, it is the most widely accepted and supported explanation for the origin of the universe based on current scientific understanding.
Yes, there are several alternative theories to the Big Bang, such as the Steady State Theory and the Oscillating Universe Theory. However, these theories do not have as much scientific evidence supporting them as the Big Bang Theory does.