Alternate Realities

noun a particular work of fiction within this genre

• Science fiction is a genre that explores imaginative and futuristic concepts.
• I love reading science fiction books because they take me to different worlds.
• That movie was some next-level sci-fi stuff!
• Her mind was like a science fiction novel, full of fantastical ideas and possibilities.

noun a type of theoretical multiverse in which multiple universes are contained within bubble-like structures

• The concept of a bubble universe is a theoretical idea within the realm of cosmology.
• Have you ever heard of the idea of a bubble universe? It's pretty mind-blowing!
• Bubble universes are like alternate realities on steroids, man.
• In the vast expanse of possibilities, each decision we make creates a new bubble universe.