Where did cosmic egg come from befor bigbang took place?
The correct answer is: we do not know. And the cosmic egg (or primordial atom as it was called in the original hypothesis, or the singularity, or whatever other name) was not an object, but a state that we interpret as one of extremely high energy density (a.k.a. extremely high temperature). The Big Bang theory does not even try to explain where the energy came from. It simply takes it for granted. The theory explains what happens after the expansion begins. The Big Bang is the expansion, which is still ongoing, not some initial explosion. — Some ideas are being investigated. Despite being called theories, most of them are not yet testable, therefore they are not true theories… yet. They include — M-theory (actually many ideas/theories grouped together); — multi-verse: a multi-dimension universe where three of the dimensions decided to expand for whatever reason; — cyclical Crunch/Bang where the previous universe collapses and the energy of the Crunch powers the Bang (however
