The Big Bang Theory

 


Hello, my loves!

I hope everyone has been doing well. I've been super busy over the past few weeks with work and some personal things, but I am back, and I've got a new podcast episode out! Click Here to listen to our episode on the Big Bang Theory! 

As I mentioned in the podcast, I am not a scientist, and I just tried to condense as much information as possible and keep it as simple as I can for anyone to understand.

The Big Bang Theory is a cosmological model of the observable universe. A cosmological model is a mathematical description of the universe that tries to explain its current and evolution aspects. 

The theory describes how the universe came to be from its initial state of high density and temperature. The Big Bang Theory is compatible with the Hubble-Lemaitre Law that states that the further away galaxies are the faster they are moving away from earth. We will get more into this in a moment.


The hypothesis is that by using the laws of physics we are able to use the theory of cosmic expansion, and by working backwards they can and have estimated that the world is about 13.8 billion years old, and this is also considered the age of the universe. 


So when what we now call the universe exploded it began to expand and then it rapidly cooled down which allowed the subatomic particles to form, and eventually the atoms. 


These then formed these giant clouds which comprising of large amounts of hydrogen, along with trace amounts of helium and lithium and when you combine all that crap with gravity, it gave us the first clusters of stars and galaxies that we see today and around these galaxies, astronomers can see the effects of dark matter. 


In 1927, Georges Lemaitre hypothesized that the universe can be traced back to its original point that he called the “Primeval Atom” and his theory would be confirmed in 1929 by Edward Hubble through his research on Redshifts. 


Redshifts are defined as an increase in wavelengths with a corresponding decrease in frequency and photon energy of electromagnetic radiation, for example, light. 


A negative redshift, also known as blueshift is the opposite of the redshift, so there is a decrease in wavelengths with an increase in frequency and photon energy and with Hubble’s discovery, they were able to confirm that the galaxies are drifting apart. 


For decades, scientists were divided between the big bang theory and the steady-state model. 


The steady-state model states that the density of matter does not expand and remains unchanged because of the continuous creation of matter and sticks to the perfect cosmological principle that states that the observable universe is the same regardless of time and place. 


But when Cosmic Microwave Background Radiation or CMB was discovered in 1964, cosmologists realized that the Steady-State theory was just shit and jumped ship and since then, the Big Bang theory has become universally accepted. 


I know that it wasn't a long episode, but after almost a month's hiatus, I didn't want to do anything too crazy getting back into it.


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