Yes, that's the current explanation of effects that we observe.
The moment, just prior to the singularity,...that point in the history of the universe when time, space, energy and matter came to be....what caused it. Why would nothing suddenly create...it is not a scientific concept or a valid philosophical concept.
Quite the opposite, it's a very simple thing to understand - at least there is a simple explanation; nobody knows how close such explanations are to the reality.
Some people theorized that our 3D universe appeared as a spark from the collision of higher dimensional planes (or objects.) Remember Flatland? How would we, 3D beings, create one out of nothing?
A 3D world contains an infinite number of 2D worlds. I don't mean to tie the Multiverse here, it's just a side effect. Any section of a 3D object with a 2D plane defined in a 3D space results in a new 2D world within that plane. While the plane is a mathematical construct, take an apple, slice it in two and you get a very real brand new 2D surface that didn't exist before. Well, it was there as a possibility but nobody knew which path your knife will take until it took it. Now the possibility turned into the reality. You can draw Flatlanders on that slice of the apple and they will live there happily ever after, wondering what created their Universe. And it was you, after all, just cutting an apple for your dessert. Congratulations, you are now the Creator of Universes - for tiny teeny flat Flatlanders, but you have to start somewhere :-)
To creeate everhything from nothing. Nothing exist at that time...science tells us
The science doesn't tell us anything about what happened before the Big Bang. There was no time in this Universe, and there was no Universe for the time to exist in. Take a pencil and draw a line on paper. Imagine that there is life in this line. How that life can comprehend what was before you put the pencil to the paper? It would require awareness of your 3D world. Now, how can a line-dwelling life form, necessarily restricted to that and only that line, explore and find out at least that there are other lines on the same paper - let alone lines on other pieces of paper.
To create 10 to the 78th power number of atoms calculated to exist in this universe....out of nothing....this is what Biblical scolars reference as the power of His Word. Creatio ex nihilo.
The count of objects is really immaterial. Your fingerprint on a glass of water contains millions of atoms, but that doesn't strike you as something exceptional. The principle in itself is far more interesting. If we postulate that our Universe is created by something or someone, then what could possibly create that?
Some people theorize? Where does the spark reside...another dimension....that is another universe.....give me the science for that please.
The science doesn't tell us anything about what happened before the Big BangYou and I agree on this. But you spent half of your post stating nonsense as if it was science or math. (By the way, as you must know, an actual infinte does not exist. It is an abstract concept used in philosophical mathematics).
My point in my last statement was no so much the number as the mass of the creation.