Fantasy is totally wide open; all you really have to do is follow the rules you've set. But if you're writing about science, you have to first learn what you're writing about.
Octavia ButlerChange is the one unavoidable, irresistible, ongoing reality of the universe. To us, that makes it the most powerful reality, and just another word for God. Earthseed: The Books of the Living Lauren Oya Olamina
Octavia Butler