questions about the big bang?

Question

I'm not sure whether this is the right place to put it but does anyone know evidence for the big bang? I looked it up but i dont understand it. Can anyone put it in simpler terms. Im arguing with my friend.

Answer 1

http://en.wikipedia.org/wiki/Big_Bang

i attached the wikipedia definition...

basically, its a theory based on the empirical (i.e. scientific) proof that space (and thus, the universe) is about 14 billion years old and is expanding. the premise is that it was once an extremely dense and hot point (the "singularity") that, for unknown reasons, suddenly expanded at a rate beyond known limits and whose materials encompass everything the universe is made up of.

there is, of course, way more to say, but this is basically the point. hope it helps?

Answer 2

It may be because of quantum physics it didn't happen quite like that and the universe didn't start at a singularity. So there may not have been a big bang.

But, the theory is, all matter in the universe was at a singularity, a tiny area with infinite mass and nearly no volume. Nothing could escape from it, not even light. Then, something happened, some triggering event, which caused the singularity to explode, the big bang. At first, matter traveled outwards at tremendous speeds and very high temperatures. The actual velocity was a critical factor in determining that galaxies, stars and eventually planets would form. If it had been any greater, the universe would have gone on expanding at such a rate that none of the super hot gasses could have coalesced to form any solid bodies. Any slower and it would all have collapsed back into a singularity.

As for evidence, that is very tough. The theory appears to satisfy most, maybe not all, observations on the way that the universe has and is developing. Some of the scientists who developed the theory are now not so sure about it all starting at a singularity because, as I mentioned before, quantum physics which could allow for the universe to have developed as it has without the need for it starting at a singularity. So far, it may be the best theory but it is not the only one.

And I would like to point out that the Roman Catholic church accepted the big bang as biblical in 1956. The Russian Academy of Science, that atheistic communist mouthpiece opposed it as being too much like a deus ex machina.

Answer 3

Someone posted that this is a scientific answer developed to advance disbelief in God. On the contrary, the Big Bang theory was first advanced by Fr. Georges Lemaitre (1894-1966), a Belgian mathematician and Roman Catholic priest.

In simplest terms, the Big Bang was the first moment in time. Before that moment there was no change, there was just a center of everything wherein existed all energy and matter. Suddenly it all expanded, Fr. Lemaitre describing it as a burst of fireworks, dispersing matter and space itself. Before this moment there was no space (universe), or even time. Since then a physical cosmos emerged, with matter, time and space emerging as we now know it.

It is a mathematical conclusion based on what can be observed, tested, and even proved by what we experience in the world. Being a Catholic priest, it was not a theory to be advanced to disprove a Creator. On the contrary, since it is based on mathematical science the Big Bang theory is used to point to an Intelligence.

It isn't easily understood as many people cannot easily conceive an existence when there was no time or space. Without grasping that it is hard to grasp what the universe today really is. In other words, the Big Bang describes what existed before this, the opposite of the universe, and why we see the universe expanding in our time.

Most astronomers and scientists no longer hold the Big Bang as a theory but as fact, as the universe can indeed be observed expanding. While some mathematicians, like Stephen Hawkins, hold that the expanding will one day stop, go in reverse, causing the universe to implode upon itself and lead to another big bang, Fr. Lemaitre believed otherwise.

Lemaitre’s contented that the Big Bang was “a day without yesterday,” a unique event never to be repeated, and many scientists agree that what can be witnessed via the expansion of stars and novas proves this to be true.

Answer 4

From what I understand of it, the hypothesis states that at the beginning of the universe, all matter was infinitely dense, contained in an object called a "singularity," smaller than a dot. This exploded, releasing energy and casting out matter at an unmatched velocity. As for proof of it, someone else will have to give that,although I do remember reading that quantum physics can calculate the expansion back to a few milli-seconds after the event, but no further.

Answer 5

If you want simple, you shouldn't be asking about the Big Bang. However, here is a site which puts it in simpler terms. It is proposing the super string theory for the beginning of the universe. It's basic premise is that our universe equals nothing plus a negative universe (that is U = 0 + -U).

http://superstringtheory.com/cosmo/cosmo3.html

Answer 6

I'm just going to go on memory here, so don't kill me if I'm not 100% correct.

The Big Bang would more appropriately be called the "Big Expansion". Astrophysicists determined that all stellar objects are slowly moving away from each other, hence everything is expanding.

They know (or think) this because of the doppler shift in the light that comes from stellar objects. You might want to look up doppler shift. I don't feel like writing that much :-)

Answer 7

I'm not sure that there are any "simpler terms" for the evidence of the big bang.

Answer 8

To put it as simple as possible, all matter in the universe was condensed into a very small amount of space no bigger than a basketball. It exploded outward in all directions and the matter formed into the gas clouds, galaxies, stars, and dark matter that exists today.

Answer 9

To keep it simple, all the physical material is the universe is moving away from a common center point. This is like looking at a lake and seeing ring waves all travelling outward from a central point. You didn't see the disturbance that caused them, but you do know that there was one.

Answer 10

many many crores yrs ago 'coz of increase in gases of sun the heat also increased & resulted in the forms of 9 big parts[9 planets] that got separated from sun.this is caleed the big bang