As I have said in first posting, I know nothing about this subject, so this is just my own opinion. The human race is supposed to be a superior all thinking all knowing breed, I haven't to my knowledge seen a U FO. As to other planets having life, why not! It has been proven that Mars did have, & what do we class as life?. I deal in facts, even so I would like to think we are not alone in our little world.