It wasn’t till the 1930s that we found that the universe consisted of more than just our galaxy. Its entirely possible that we’ll one day find that our universe is one of many that are part of something more.
It still boggles my mind that all of this began as a Singularity...a single, dimensionless point in time and space...and expanded into what we see today. Given that we know the universe is still expanding, what’s it expanding into? I’m not smart enough to understand this.
Many Mansions.