What Triggered the Big Bang and Created Our Universe?

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The discussion highlights that current mainstream physics lacks a definitive explanation for what triggered the Big Bang, leading to the exploration of exotic theories like Ekpyrotic and cyclic universe models. It emphasizes that the Big Bang model describes the universe's expansion rather than an explosive event. There is no consensus on what preceded the Big Bang, and many theories remain unproven due to limitations in experimental capabilities. The early universe is often referred to as a "theorists' playground" due to the speculative nature of current understanding. Ongoing research is essential to uncovering the mysteries surrounding the origins of the universe.
quantum123
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What went bang to start everything?
 
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There isn't anything in currently accepted mainstream physics that describes the process leading up to the "big bang." So, the answer to your question will involve "exotic" theories like Ekpyrotic theory and other forms of the cyclic universe explanations, and others. But the truth is that science can't answer your question today, that why we're still doing research.
 
Sometimes, the phrase "big bang model" makes people think of an explosion, or a "bang," that created the universe. It should be noted, however, that the big bang model does not necessarily mean this, but rather is a model of cosmology that develops such that the universe was smaller in the past and has increased in size from then-- i.e. that the universe is expanding.

As the above poster says, we currently do not know what preceded the "big bang", or what happened in the time immediately proceeding the "big bang," and so cannot possibly say what happened. Many theories have been developed, but cannot and have not yet been proven since there are currently no accelerators that are probing high enough energies to look into the first 10^(- something big) seconds of the universe. Whether such accelerators would help prove the theories is another question, but they would, I imagine, be of some use. Because of this, the very early universe (as in the time before the "Grand Unification Epoch," where all four forces were of equal strengths) is often referred to as a "theorists' playground!"
 
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Abstract The Event Horizon Telescope (EHT) has significantly advanced our ability to study black holes, achieving unprecedented spatial resolution and revealing horizon-scale structures. Notably, these observations feature a distinctive dark shadow—primarily arising from faint jet emissions—surrounded by a bright photon ring. Anticipated upgrades of the EHT promise substantial improvements in dynamic range, enabling deeper exploration of low-background regions, particularly the inner shadow...

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