It is the Kalam cosmological argument
- Everything that has a beginning of its existence has a cause of its existence;
- The universe has a beginning of its existence;
- The universe has a cause of its existence.
Georges Lemaitre proposed it.
It is an argument for the existence of the big G-man or "God". That's all big bang is.
It is not science. It never was science. It never will be science. It is religious creationism. The religious folk are inside of the establishment. The true believers of God work inside of astronomy departments. The real priests call themselves "scientists" now.
Are you surprised? Nothing has changed. We still live in the dark ages.