Crop Circles - Carl Sagan's Letter To U.K.'s MoD

Carl Sagan, a famous American astronomer and TV personality was long known for his skeptic stance towards UFOs in the public eye but over the years it has come out his personal beliefs on the topic were possibly quite the contrary.

 A few years ago, we covered a revealing post where Dr. Allen J. Hynek (from project Bluebook) apparently confided his revelations about Dr Sagan to his former