No doubt, there have tens of thousands of still unexplained sightings of Unidentified Flying Objects, among the many more which HAVE been explained. Does that mean the odds are high we have been visited and are still being visited by alien spacecraft? Short answer: Nah. Standing on the shoulders of astrophysicists' and astrobiologists' work, I explain the near certain mathematical probabilities nobody out there knows we are here. If you're enjoying this podcast, PLEASE SHARE...it's the only way for a new podcast to grow in listenership, now available on 7 platforms.