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| | Year 1178 |
 | | Evidence of the crossing of a cometary stream in the year 1178 A.D. There are at least two pieces of information that indicate that the Earth crossed a cometary stream during the late 11th and the 12th century, with a peak around the half of the 12th century. |
| | Frequent and scaring appearances of large comets were indeed a main factor that contributed to the special psychological climate that led to the Crusades, which were often seen, at least at the popular level, as a means for atonement of sins, the divine wrath expressing itself through the menacing comets. |
| | Around 1178 there is an important political discontinuity in the Japanese history, given by the passage of the political power, after a period of intense fighting, from the southern Taira dynasty (with capital Miako, now Kyoto), to the northern Minamoto dynasty (with capital Kamakura, near Edo, now Tokyo). |
| www.unibg.it /maths/dynamics/year.html (3410 words) |
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