Evidence Of Tunguska-type Impacts Over The Pacific Basin Around The Year 1178 A.D. Emilio Spedicato University of Bergamo, Piazza Rosate 2, 24129 Bergamo, Italy, email: emilio@ibguniv.unibg.it In year 1178 A.D., as related by Clube and Napier in their book The Cosmic Serpent, a strange event was observed to affect the Moon, which may be explained by a large impact on the hidden face, originating the Giordano Bruno crater. A number of observations suggest that catastrophic cometary or meteoritic impacts around the same time also affected the Pacific basin: Maori legends of great fires destroying forests and the moa bird, to...