Early civilizations believed that the Earth is flat. Ptolemy said that the Earth is the center of the universe which was widely accepted until Copernicus formulated the idea that the Sun rather than the Earth is the center of the Solar System.
Well what if the world is semi-sphere, alive and resembles to a jellyfish. it can move everywhere in the galaxy, only the moon rotates around it. And we human beings are sort of like a cancer cell, tough, ever multiplying, creative and we just wanted to survive but unconsciously killing our planet.