The acronym ETH stands for Extra Terrestrial Hypothesis, and it's long been the mainstay of how we look at the UFO phenomenon. The easy way to wrap your head around the flying saucer mystery is to simply declare that this mystery has it's home in outer space. But, there is something much more bizarre going on here, and the ETH falls apart if you really look at it. As Nick says, it's not just that it's weird, it's TOO weird.