👉 Mystaria is a fictional world in the science fiction genre that was created by Robert A. Heinlein. It is an alternate reality where humanity has evolved beyond the confines of Earth's atmosphere, and the inhabitants have developed advanced technology and understanding of their environment. The concept of mystaria is often used as a metaphor for the idea of an alternative or different world, where humans are not confined to one place but can explore and interact with other dimensions or universes.
