What is the principle observation supporting the Big Bang theory?

The earliest and most direct observational evidence of the validity of the theory are the expansion of the universe according to Hubble’s law (as indicated by the redshifts of galaxies), discovery and measurement of the cosmic microwave background and the relative abundances of light elements produced by Big Bang …

What are the 3 key pieces of evidence for the Big Bang theory?

Three key pieces of observational evidence lend support to the Big Bang theory: the measured abundances of elements, the observed expansion of space, and the discovery of the cosmic microwave background (CMB). The CMB refers to the uniform distribution of radiation that pervades the entire universe.

What are the 4 stages of the Big Bang theory?

The temperature of the fireball drives the resulting mix of particles and radiation, and we can divide the Universe evolution into four stages; heavy particle era; light particle era; a radiation era and the present day era of matter.

What are the stages of the Big Bang theory?

The earliest stages of the big bang focus on a moment in which all the separate forces of the universe were part of a unified force. The laws of science begin to break down the further back you look. Eventually, you can’t make any scientific theories about what is happening, because science itself doesn’t apply.

Who proved the Big Bang theory?

The Big Bang Theory. It was in 1920 that Edwin Hubble discovered that the universe was expanding by measuring the light from distant galaxies. This discovery was followed in 1927 by Georges Lemaitre, a Belgian astronomer, who was the first person to produce a version of what is now known as the Big Bang model .

What is the Big Bang theory in physics?

The Big Bang theory is an effort to explain what happened at the very beginning of our universe. Discoveries in astronomy and physics have shown beyond a reasonable doubt that our universe did in fact have a beginning. Prior to that moment there was nothing; during and after that moment there was something: our universe.

What made the Big Bang?

Big bang thinking was made possible by an interpretation of the observation of red shift of light coming from distant galaxies. It was observed that the red shift was redder from more distant galaxies which triggered inflationary motion of space, that is, accelerating expansion.