Is the Big Bang Theory correct? PROVE IT!!

Is the Big Bang Theory correct?

PROVE IT

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What exactly is the Big Bang Theory?

• The Big Bang Theory is the scientific theory that all matter in the universe was created during a single moment in time that was a very hot, dense mixture of radiation and subatomic particles.
• This moment occurred 14 billion years ago.
• It took ~1 billion years from the Big Bang for the temperatures to become cool enough to form the first stars and galaxies.

http://www.universetoday.com/54756/what-is-the-big-bang-theory/

What observable evidence do we have to prove the Big Bang?

There are two main pieces of evidence that prove the Big Bang theory:


1. In 1965 Penzias and Wilson were using a sensitive microwave antenna designed for satellite communications when they noticed that wherever they pointed their antenna there seemed to be an unexpected noise. This "noise" was actually the cosmic microwave background or leftover radiation from the Big Bang. The reason that the cosmic microwave background was everywhere their antenna pointed was due to the inflation (the sudden expansion of the universe during the GUT era) of the universe. These opposite sides of the sky were actually close together before inflation where they were then pushed far apart.
Here is a picture of cosmic microwave radiation in the Universe:

http://theevolutionofhuman.com/chapter-10/ii-the-big-bang/

2. The Big Bang theory also correctly predicts the elements that make up our universe today. It tells us that at one point the universe must have been hot enough to fuse hydrogen into helium since fusion in stars could have only produced 10% of helium but there is 25% helium in the universe. The Big Bang theory predicted that the universe was about 3,000 K and was able to fuse hydrogen into helium. The universe has also redshifted thermal radiation from that time (expanded) to ~1000 times longer which matches up to the Big Bang theory predictions which were that the universe was 3,000K / 1000 = 3 K and today the universe has a background temperature of 2.73 K.

One problem that the Big Bang brings up is that it violates the first law of thermodynamics which states that matter cannot be created or destroyed. But as scientists approach the beginning of the universe, the laws of science begin to break down and there must have been a beginning of matter at some point so this critique was disregarded. 

One problem that the Big Bang theory solves is the darkness of the night sky. Kepler created the idea of Olbers' paradox that states if the universe were infinite, unchanging, and everywhere at the same time then the entire night sky would be as bright as the sun, however the Big Bang theory solves this because it tells us that we can only see a certain amount of stars because the universe began at a particular moment. This is why the sky is dark at night.

The main alternative to the Big Bang theory is the Steady State theory which states that the universe is expanding but the density remains constant and matter is continuously being created to form new stars and galaxies at the same rate old ones become unobservable due to increased distance and velocity of recession. But since we are able to view objects in the Universe at different points in time we can see that the Universe has been changing with time and therefore the Big Bang theory is more accurate.

https://prezi.com/wht-n38zudjs/steady-state-and-big-bang-theory/

QUICK FUN FACT: The name "Big Bang" came from astronomer Fred Hoyle, who believed in the steady state theory during this time, in a 1949 radio broadcast.

I hope you are now convinced!!