Forumchem - Forum with AI(ALICE BOT & HAL9000) and TTS

While the big bang is the best answer we have for the beginning of the universe it is still not accepted as undisputed fact. While the term theory does not mean fact it is as close to fact as we can get. Such as the evolution theory, it"s as close to the truth as we can find but still open to debate.

So, is the big bang theory a theory or a hypothesis

It"s a theory that most closely fits the observable evidence. There is no such thing as proven facts in science. There is only evidence, and theories (or models) that fit that evidence. As long as a theory is supported by evidence, it stands. If new evidence calls for the theory to be corrected, the theory gets corrected. If new evidence contradicts the theory, the theory is discarded.

<>

Theories don"t get accepted as undisputed facts. They"re explanations for facts.

<>

This must be your own definition. In science, a theory is an evidence-based explanation for something or other that"s potentially falsifiable, and has been tested. At no stage is it deemed to be somehow proven, and it remains permanently open for revision or even refutation.

The Big Bang is the dominant (and highly supported) theory of the expansion of the universe. In essence, this theory states that the universe began from an initial point or singularity which has expanded over billions of years to form the universe as we now know it.
According to Einstein"s general theory of relativity, the Big Bang represents The Beginning, the grand event at which not only matter but space-time itself was born. Classical theories offer no clues about existence before that moment.

The Big bang theory anticipates that every matter in this universe was once a primordial super hot and super dense ball of gas which had infinite energy and density .The ball was concentrated to a tiny point, and it exploded due to immense forces that were in existence.
The big bang theory is widely accepted because it has an evidence. Edwin Hubble while observing the galaxies determined that it was receding from us with a high velocity, as the spectra of light was Red Shifted, which means that the universe is expanding. We can conclude that something that has been expanding now previously needs to be smaller. This is one of the ground breaking discoveries and supports the big bang.
.
To get something from nothing would require a supernatural event (magic). We have no evidence for the supernatural. Therefore the only logical rational conclusion is that the universe (time,space,matter/energy) has always existed in a state of perpetual motion and the big bang was simply a natural event in the already infinite/ageless existing universe.

But Big Bang is not concerned with the origin of the universe.(that primeval atom) It is concerned with the expansion and the development of the universe. There are currently no outstanding theories on the origin of the universe and any sort of hypothesis would just be conjecture.

Probably that"s a matter of opinion. In my opinion, just the fact that it has survived, and occupied the top spot for so many decades should be enough reason to call it a theory.

__________________________
Zeak said, The big bang theory isn"t really around any more. It"s called M theory now,...

Hmm, The only references to M-theory that I could turn up with a quick google search are all about the branch of physics that formerly was known as string theory. M-theory probably does NOT deserve to be called a theory because (thus far) it doesn"t tell us anything new about the universe that we didn"t already learn from quantum field theory and general relativity. It only tells us the same old things in a new way.

The idea of the big bang is pretty simple. Our universe seems to be expanding. Big bang theory says that once, long ago, it was all compressed down to a single, infinitely dense point, and that it"s been expanding ever since. Evidence like the cosmic microwave background seems to support that idea.

If M-theory ever comes to dominate our understanding of events that involve extremely high energies, and extremely small time and distance scales, then it certainly will play a role in how we understand the very early stages of the Big Bang.

http://en.wikipedia.org/wiki/M-theory

The big bang theory is proven.

The big bang theory has been proven by two people (who"s names I forgot) and they also won the nobel prize for it. They found background microwave radiation in space which is believed to be the remnant heat of the big bang. Probably is as close as we can get.

A theory is a logical thought of experiments collected from a proven facts, as Einstein quoted It is only theory that decide what we manage to observe.

It"s not just a theory, it"s a a collection of facts along with explanation. That"s the best you can do.

The big bang theory isn"t really around any more. It"s called M theory now, where two already existing universes collide, their surfaces rippling and making contact in random patterns, making clumps of mass instead of a perfectly blended field.

But yes. It"s still a theory. And it is a theory, because we don"t actually know if it"s true or not.

Theory isn"t close to fact, it"s an educated guess.