The Mudcat Café TM
Thread #166900 Message #4022316
Posted By: Donuel
05-Dec-19 - 12:24 PM
Thread Name: BS: in the beginning and now
Subject: RE: BS: in the beginning and now
I think thread drift is good and natural
What makes sense to me is that:
In the beginning there was no beginning, we are still beginning.
A new study isn’t suggesting there was no Big Bang. It’s suggesting that the Big Bang did not start with a singularity – a point in space-time when matter is infinitely dense, as at the center of a black hole. How can this be?
The catch is that by eliminating the singularity, the model predicts that the universe had no beginning. It existed forever as a kind of quantum potential before ‘collapsing’ into the hot dense state we call the Big Bang. Unfortunately many folks confuse ‘no singularity’ with ‘no big bang.’
The new model – in which our universe has no beginning and no end – comes from Ahmed Farag Ali at Benha University in Egypt and coauthor Saurya Das at the University of Lethbridge in Alberta, Canada.
Their paper looks at a result derived from Einstein’s theory of general relativity known as the Raychaudhuri equation. WTF?
Basically his equation describes how a volume of matter changes over time, so its a great way of finding where physical singularities exist in your model. But rather than using the classical Raychaudhuri equation, the authors use a variation with a few quantum tweaks. This approach is often called semi-classical …
The upshot is that this work eliminates the need for an initial singularity of the Big Bang. That is, it eliminates the need for a single infinitely dense point from which our universe sprang some 13.8 billion years ago. The Big Bang itself, however, can still have happened, according to this model.
The Big Bang is often presented as some kind of explosion from an initial point, but actually the Big Bang model simply posits that the universe was extremely hot and dense when the universe was young. The model makes certain predictions, such as the existence of a thermal cosmic background, that the universe is expanding, the abundance of elements, etc. All of these have matched observation with great precision. The Big Bang is a robust scientific theory that isn’t going away, and this new take does nothing to question its legitimacy.
The universal origin story known as the Big Bang postulates that, 13.7 billion years ago, our universe emerged from a singularity — a point of infinite density and gravity — and that before this event, space and time did not exist (which means the Big Bang took place at no place and no time).
There is ample evidence to show that the universe did undergo an early inflation in a trillionth of a trillionth of a trillionth of a second, I explain this away as a artifact of what it looks like when time was at a virtual stand still do to gravitation stopping time in a black hole. The universe is thought to have expanded by a factor of 1078 in volume. For one, the universe is still expanding in every direction. The farther away an object is, The faster it appears to move away from an observer, suggesting that space itself is expanding (rather than objects simply moving through space at a steady rate). Soon we will see beyond our observablecurrent horizon of the farthest galaxies with new infra red telescopes.
Another key piece of evidence is the cosmic microwave background (CMB), which is thought to be heat left over from this great cosmological event. It can be observed in every direction and has no single origin point. Scientists think the CMB began propagating through the universe about 380,000 years after the Big Bang, when atoms began to form and the universe became transparent, says the ESA. I bet no one has read this far, so kofefe is found to be coffee.
What this new look at the beginning allows is the old cyclic universe theory which allows for an infinite existence with no beginning.