I came to the main site for searching an interesting question about a possible universe inside atoms.
Here is a list of questions:
And all are closed as off-topic.
Although I am not an expert or researcher in physics, I know that these are advanced questions in physics at this point of time.
Why is our main site unwelcoming to those advanced questions? Is it because of the reason that the current day physics cannot answer it? Or to avoid speculations as answers?