Surprise: the Big Bang isn’t the beginning of the universe anymore
 

We used to think the Big Bang meant the universe began from a singularity. Nearly 100 years later, we're not so sure.

https://i.imgur.com/O5SFHGZ.png


Where did all this come from? In every direction we care to observe, we find stars, galaxies, clouds of gas and dust, tenuous plasmas, and radiation spanning the gamut of wavelengths: from radio to infrared to visible light to gamma rays. No matter where or how we look at the universe, it’s full of matter and energy absolutely everywhere and at all times. And yet, it’s only natural to assume that it all came from somewhere. If you want to know the answer to the biggest question of all — the question of our cosmic origins — you have to pose the question to the universe itself, and listen to what it tells you.

Today, the universe as we see it is expanding, rarifying (getting less dense), and cooling. Although it’s tempting to simply extrapolate forward in time, when things will be even larger, less dense, and cooler, the laws of physics allow us to extrapolate backward just as easily. Long ago, the universe was smaller, denser, and hotter. How far back can we take this extrapolation? Mathematically, it’s tempting to go as far as possible: all the way back to infinitesimal sizes and infinite densities and temperatures, or what we know as a singularity. This idea, of a singular beginning to space, time, and the universe, was long known as the Big Bang.

But physically, when we looked closely enough, we found that the universe told a different story. Here’s how we know the Big Bang isn’t the beginning of the universe anymore.

https://bigthink.com/starts-with-a-b...AZ0Gj7liAW5Qug

I think our galaxy The Milky Way started with this Big Bang 16 to 17 billion years ago.
When it comes to the rest of the univers(es)it has always been there. No beginning and no end.

Galaxy dies and galaxy are born like our Milky Way.
Univers(es) expanding continues for ever

The perpetrator behind this is Dark matter

Markus

Think twice, Markus - under guidance by the linked book. ;)

Things might not be what they look like. In the end, Big Bang is just a theory, made - like every theory - by best possible use of known facts at a given time. Possible that one day we put Big Bang into relation to a bigger context, as comologists today already do, or replace it completely with a then better fitting theory.


Scientific theories are never-ending construction sites. That is no criticism, nor pessimism - but the essence of the scientific process. No absolutes, no penultimate truths.

The Theory behind Big Bang is that the entire universe started from a little atom and throughout billions of years it expand to what it is today.

I say the theory could very well fit our own galaxy the Milky Way, but not the entire universe.

I have, based on all the documentary I've seen, heard and read, created my own theory.

Secondly
Nothingness can't exist. Universal law forbid this.

There are more universes than ours.

Markus

I didn't know you were an astrophysicist. :shucks:

I'm not an astrophysicist far from it.

I just like to create own theory about what's going on in our universe.

Markus

And how exactly do you know what Universal Law is?
:har:

Many a non-realistic point of view started that way. Flat-Earthers, for instance. :shucks:

Universal law is many things.

I made a search for nothingness cannot exist and found this

Markus

I do NOT believe in flat-earth theory.

If people want to believe it they are welcome to do so.

Markus

Yeah I can Google too!

Nothingness is an abstract concept, meaning it may or may not possibly exist.
:har:

We do NOT know all the Laws of the Universe! If they even exist is questioned!
And Laws can be broken!

Meh. The article linked in the OP begins by stating the big bang isn't the beginning, and concludes by saying that:

IOW, the big bang theory is no less plausible than before. More precisely: we're now even less sure whether or not it is the right theory - and we may never know.

Don't get me wrong, it's still fascinating. Just a bit of click-bait at the beginning ... as usual.

What really interests me is the idea of "time" itself in [or "before"] these extremely early states.

Nor do I. But, yes, people are indeed welcome to believe their own made up theories. But I'm not gonna let a surgeon that made up their own medical degree operate on me. Nor am I going to argue with a community of astrophysicists using my own theory of the universe based on a documentary I once saw. Just sayin'. :shucks:

I do not claim that I'm absolutely correct in my home made theories when it comes to our universe.

Heck from what I know there could be nothing but emptiness and from nowhere the universe startet to expand.

Edit
Just having difficulty to believe nothingness can exist.
End edit

Markus