how can something come from nothing? is there any scientific proof?
"Nothing" isn't really... real.
You'd need to define nothing first.
The fact that we're here means that there's something, rather than nothing.
Even if all the matter exploded into existence at one point in time billions of years ago, there still had to be something for it to explode into.
This would, I guess, indicate that there is no logical reason to assume that "nothing" has even ever existed.
The universe is expanding into what the big bang occurred in, but it's still not "nothing".
You couldn't expand into "nothing".
Not sure though.
To me, "nothing" is an intangible standpoint.
The closest thing to nothing there is, is the time before you were born. (Relative to your perception and existence.)