You are not very intelligent, are you?
Considering you are using the word THEORY wrong, you should probably re-type your post. A theory is a body of evidence. So if Dr. Tyson is putting forth a body of evidence in support of his conclusion then he is correct and you just ate your own words.
Anyways, his scenario and ideas are most likely because they based upon his knowledge and expertise. He is an expert, you are not. His logic is based upon the scientific foundation and understanding of the universe. Beyond that, he is infinitely smarter than you can ever hope to be.
Having said all that, the 'UFO over Jerusalem' has already been proven a hoax, well beyond a shadow of doubt. I'm not about to explain it here, or link to where and how, but just know it has been digested and came out as notihng more than a well played hoax supported with actual/factual evidence..