All theory’s change over time with research. A theory is a well-tested hypothesis that hasn’t been proven wrong, generally accepted to be correct unless proven wrong. Well, the Big Bang is the most consistent and accurate theory of how we got here along with everything else we see. Remember a theory cannot be a law. The Big Bang was what happened before everything and before there was just nothing until the Big Bang that happened around 13.7 billion years ago causing the expansion of the universe and the birth of light. The universe expanded from the size of a grapefruit.
The Big Bang Theory is the leading explanation of how the whole universe began. And there was no explosion. We made Galaxies, stars. Our universe started a very small, hot, and dense super force. ( Mix of the four cosmic forces.) With no atoms, stars structure, or form called a singularity.
As this theory really cannot be proven it is still the most consistent theory then again the Big Bang Theory is the most consistent. As telescopes advanced scientists could see more clearly and deeper into the universe. Everything in the universe we see like humans, water, rocks, forests, was created in the first seconds in the Big Bang.
In 1929, Edwin Hubble discovered galaxies aren’t static in one place and there are moving away from earth and this was the first actual evidence of the Big Bang. And Hubble’s Law was created and his discovery is the starting point of the Big Bang. And he saw from the motion of those galaxies that the universe was expanding. The Hubble’s telescope had then allowed us to see deep into our universe.
Hydrogen was the first element and then after a few million years it clumped together and gravity put it under pressure and created stars and galaxies and light was created and the dark age was over. And in the first second of the Big Bang, the universe is made up of crucial particles and electrons, quarks, and energy, neutrinos and photons, and then the less familiar types. Then those particles smash together which form neutrons and protons. And then again we come back to Hydrogen, after 3 seconds in the Big Bang Neutrons and protons had come together and then formed the nuclei of the simple elements most people know which are hydrogen, lithium, and helium. After that 300 thousand years later at that one moment in time, the energy in the matter and energy in radiation is equal.
But still, our universe expansion continues to go on. And our waves of the light are stretched out to lower and lower the energy and meanwhile, the matter travels onward and is largely not affected. And even more, after that 300 million years have passed and then our gravity has strengthens slightly caused by irregularities in the density of the primordial gas. Even as our very universe continues rapidly expanding, pockets of gas become even denser and then stars begin to ignite within those pockets, and the groups of stars have become our earliest galaxies and this point is still about 12 to 15 billion years before the present time.
And lastly, it has been 3.8 billion years BP so then our Earth has cooled down and our atmosphere developed and then microscopic cells that were living including animals and plants started to evolve and flourish into planet Earth’s multiple volcanic environments at the time.
The Big Bang Theory says the temperatures in the early universe were that high that fusion reactions could happen. This then resulted in the formation of our universes light elements like helium, deuterium, and hydrogen. And the reasoning behind why heavy elements were not formed directly after the Big Bang is because there weren’t anti stable nuclei that had 5 or 8 nucleons.
Einstein made up the equation of E=mc2 and it says that mass can be converted to energy and also the other way around. So Einstein didn’t know about the Big Bang well because at that time it wasn’t a thing yet. So mass can convert into energy and vice versa so than energy can be converted to mass. And if you extrapolate the rate of expansion and temperature of the universe back to much closer to the Big Bang that when the cosmic microwave background had been produced and can find that in the first couple seconds of the Big Bang, and the energy of the photons was great enough to create particles like anti-electrons that are called positrons and antiprotons.
The antimatter counterpart of an ordinary particle has the exact same mass and opposite charge of the ordinary particle but that is if it isn’t neutral. When an ordinary particle and its antimatter counterpart collide, they destroy each other completely to make photons. And the process can be reversed if the photons contain enough energy. And in the first seconds of the Big Bang, our universe was hot enough for the photon radiation to be able to go through this matter-antimatter particle transformation using gigantic particles like neutrons and protons. When the temperature dropped to around 10 to the 13th K at 1 microsecond after the Big Bang, the process stopped for protons and it still continued for the less gigantic particles like the electrons.
The Big Bang Theory may not have been proven but what do you think happened, not trying to bring religion into this but do you really believe that God made our universe? And then again this is the most consistent theory of how our universe began.
In conclusion, a theory cannot be a law, and a theory is a well-tested hypothesis that hasn’t been proven to be wrong, generally accepted to be correct unless it is disproven. And the Big Bang Theory happened 13.7 billion years ago which was thought to be the event that created our universe. Further research and advances in technology like the Hubble’s telescope allowed us to see deeper into the universe. And remember this is the most consistent theory of how the universe was created.
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