A lot material on the internet say that the universe was created by bigbang and it started of with a single point and it blew up to the current state.......
I am no scientist, but just to imagine that this massive-massive universe was so much compressed at time=0 is unbelieveable to say the least.......Are there any proofs to really tell us that this whole stuff was just the size of single point?
Expanding universe could also have been from a initial mass say the size of a "galaxy" atleast.
2006-08-08 06:30:35 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The truth is that we do not know: we were not there.
In their quests for knowldge, scientists build what we call "models".
A model is a set of equations that "represent" something. ie, we have a model of our atmosphere. We use it to make predictions.
When the model give correct results to our predictions (it will be raining tomorrow, according to our model, and if it does, we can say that our model (or our maths) are close to the reality.
It is the same with the model of the universe. We have designed many models. The one that includes the big bang is the most correct one, because we can derive from it nearly all that we can check and see. This does not mean it is correct.
Sometimes, someday, someone may invent a new model that started with something deifferent, ends up with what we have and STILL, be better than the big bang theory.
Just wait and see! Do not forget that only a few centuries ago, Earth was the center of the universe, Earth was flat etc...
We change our models, our theories as we go along.
TODAY, the big bang is... true (as far as we are concerned!)
2006-08-08 07:15:25 · answer #1 · answered by just "JR" 7 · 0⤊ 0⤋
A theory is an intelligent or a mathematical statement or an explanation of a physical phenomenon. It can not be proved. It can at best be verified. There are lot of assumptions,idealizations besides boundary conditions on the basis of which a theory is propounded. It is discussed at length by the scientific community and all the objections made have to be satisfactorily explained and theory itself has to be defended to have a general consensus. It is then accepted by all till something new or better theory comes up. Therefore there is really no finality about any theory as such. The point you make about size of the mass at t=0 is valid and I think as far as i know there are no satisfactory answers for that.
2006-08-08 14:33:07 · answer #2 · answered by openpsychy 6 · 0⤊ 0⤋
The definition of Theory: Abstract reasoning; speculation, An assumption based on limited information or knowledge.
So big bang is just the best explanation, it could have occurred that way. "=0 is unbelievable to say the least" perhaps but do you really have an understanding of black holes and their density? I don't but your statement reminds me of hitchhikers guide to the galaxy, adams talks about the size of the universe, you have to read it cause it's not only funny it''s rather usefully at the same time.
2006-08-08 13:48:13 · answer #3 · answered by jallygood 2 · 0⤊ 0⤋
I'm no official scientist myself, but if you want my opinion. The big bang theory is more or less just that. A theory. Derived from the fact that everything is moving outward from something. Scientists really have no way of actually knowing whether it's true or not.
2006-08-08 13:38:55 · answer #4 · answered by mak 1 · 0⤊ 0⤋
thats what they say
2006-08-08 14:24:09 · answer #5 · answered by Rajan 3 · 0⤊ 0⤋