The Concave Earth Theory, is a belief that the Earth is concave, and space, as well as the surface of the Earth, are inside of it. The belief is rare, but has gained in popularity since the recent Flat Earth resurgence.
- There is no Biblical basis for this theory.
- There is no reason for celestial objects, like the sun and moon, to float inside the Earth.
- It should never get dark, under this model.
- The shadow of the Earth can be seen on the moon.