Technically, a scientific hypothesis requires it to be testable. Given this is at least partially scientific, the person saying it is a hypothesis should probab

Technically, a scientific hypothesis requires it to be testable. Given this is at least partially scientific, the person saying it is a hypothesis should probably present a way to test if it is true or not. Given we don't know how to test for it yet, we may be left with continuing to explain what it is we're seeing without saying what it is. Which, I suppose, is a big challenge with space based discoveries.