VIDEOS:
The Solar System Kingdom
There's an entire quasi-medieval culture of Human Alien civilizations across Earth's Solar System, with the reigning monarchy based on the surface of the sun. Rick was completely unaware of this because he's been to other planets in parallel universes where they don't exist and thus never bothered to check.
Example of:
Solar System Neighbors
Example of:
Putting on the ReichExample of:
Human Aliens