OK I will. The false vacuum theory is where the entire universe could be a false vacuum and not a true vacuum. It could be slightly unstable, and if a strong hypernova or supernova that could rupture the false vacuum it could destroy anything and everything around it and it’s just scary.
specific9 OP t1_j0v6s0l wrote
Reply to comment by Dreadnought_Necrosis in Do you know what one of the scariest theories are? by specific9
If it was true it could possibly change everything that we believe about physics or it could change nothing.