What are evidences that prove the Big Bang Theory ?

Answer 1

Before you visit the "http://www.big-bang-theory.com" website recommended by another responder, you should be aware that that site's main agenda is to lead people to Jesus, not to provide accurate science education. I humbly suggest that this may affect their objectivity in the matter.

If you REALLY want to know the real evidence, try this site instead: "http://map.gsfc.nasa.gov/m_uni.html". There is a ton of (easy to read) information there, but the main pieces of evidence they discuss are:

Cosmological expansion. Einstein predicted the expansion of space as part of the theory or relativity, even before it was known that the universe actually was expanding. The fine details of the observed expansion are perfectly consistent with the big bang, and are difficult to explain using other (non Big-Bang) models of cosmological evolution.

Abundance of the light elements, H, He and Li. The Big Bang model makes definite predictions about the abundance of these elements; and those predictions are consistent with observation.

Cosmic background radiation. The Big Bang model is the only one that predicts that there should be a "glow" of radiation permeating the universe, at a particular temperature of about 3°ree; above absolute zero. After the prediction was made, this "glow" was actually discovered.

So the bottom line is: cosmologists have worked out the details of a lot of possible cosmological models over the last hundred years; each model making definite predictions about what we should observe in space. At the end of the day, the Big Bang is the only model that fits all of the observations.

Answer 2

Science is not in the business of proving theories; it's in the business of disproving them. Every theory is accepted on a tentative basis, in that there are observations that could overturn any good theory. We give something called the "Nobel Prize" for making them. Theories that survive multiple attempts to disprove them eventually become widely accepted, but never "proven," whatever that means.

The three "pillars" or primary pieces of evidence that support the Big Bang theory are:

1. The expansion of the universe, which implies it was smaller in the past

2. The composition of the universe, 75% H and 25% He, which implies a time when the universal temperature and density were such that hydrogen fusion could take place, and agreement with primoridial abundances of heavier elements with universal fusion predictions

3. The Cosmic Microwave Backgound, a direct observation of the hot dense state of the early universe.

Kindly ignore people here (or anyone) who make statements such as "there is no evidence, that's why it's a THEORY." Such people have no understanding whatsoever of the basic scientific process, in which THEORY is the highest pinnacle an idea can ever achieve. Theories NEVER "grow up" to become facts, or anything else.

Answer 3

There are mountains of evidence for Big Bang theory, so much in fact that no one in the field disputes the majority of the theory. Evidence such as cosmic element abundances predicted from big bang nucleosynthesis, the cosmic microwave background (one of the most precise and beautiful things in all of science) as well as the expansion of space. Don't listen to ignorant people, check out the facts for yourself.

Answer 4

One cannot subject scientific theory (including the Big Bang) to proof. Scientists formulate theory as the simplest explanation for a wide variety of observations.

One observation found to contradict the explanation results in its revision - if not wholesale abandonment.

The Big Bang explains a number of phenomena...the cosmic background radiation, expansion and the abundances of various light elements.

Answer 5

Today's scientist make the Big Bang theory because the galaxies are seems to move farther and farther from us, and the farther a galaxy is from earth the higher their velocity is. If you extrapolate what is seen by the astronomers, you may say that the universe began with a Big Bang.

But extrapolation is extrapolation. In the years or may be centuries ahead, we will gain more evidence on what is actually happening. The additional evidence from future observation will add up on our understanding of cosmos. After that there may be modification small or large on the theory depend on what we observe in the future.

That is how science works for ages, flat world theory agree with what people in the past observe, but disagree with later days scientist, which propose spherical earth and geocentric theory, which later disagree with additional observation and become slightly elliptical earth and heliocentric.

I think there is still no conclusive evidence, for now. Even if a conclusive evidence exist, we may be unable to understand the evidence as conclusive.
Just like you cant use DNA test to prove that a man is a child's father in a civilization that dont understand or dont have any idea about what DNA is.

Answer 6

The basic idea is that we see today thru telescopes and radar etc (there's plenty of evidence) that the Universe is expanding. The theory is that if it is expanding now, then yesterday it was smaller than it is today, the day before yesterday it was smaller still ... and if you simply run the film backwards you can easily see that at some point in time the universe had to be the size of a golf ball, and at some point before that it was the size of a pea and at some point it was no bigger than the period at the end of this sentence.

Get it?

Answer 7

Good question there is a lot of debating going into the "big bang" theory.

Answer 8

There is no evidence,it will likely always remain theoretical.
Heat may not have emerged for maybe hundreds of millions of years so the back ground radiation will never take us back to the beginning.
The universe is a finite entity so it had to start and we are here so we know it started.
Proof,well logic.

Answer 9

there is no evidence that proves it, that is why it is called a theory. however there is a substancial amount of evidence that leads to it.

Answer 10

the sun..?