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2. Observational history of comets - Wikipedia

   en.wikipedia.org/.../Observational_history_of_comets

   Little is known of what people thought about comets before Aristotle, who observed his eponymous comet, and most of what is known comes secondhand.From cuneiform astronomical tablets, and works by Aristotle, Diodorus Siculus, Seneca, and one attributed to Plutarch but now thought to be Aetius, it is observed that ancient philosophers divided themselves into two main camps.

3. Historical comet observations in China - Wikipedia

   en.wikipedia.org/wiki/Historical_comet...

   Around forty comets have had their orbits calculated based entirely on ancient Chinese records. [2] Of the well known comets, besides Halley, Brian G. Marsden suggested, based on Chinese and other ancient observations, that the Great Comet of 1106 was a previous apparition of Comet Ikeya–Seki. [14]

4. Great Comet of 371 BC - Wikipedia

   en.wikipedia.org/wiki/Great_Comet_of_371_BC

   Heinrich Kreutz was a German astronomer, [11] who claimed that the orbits of several sungrazing comets were related and likely produced when a large Sun-grazing comet fragmented hundreds of years previously. That group, known as the Kreutz Sungrazers, has produced some of the brightest comets ever observed, including X/1106 C1 and Comet Ikeya ...

5. List of periodic comets - Wikipedia

   en.wikipedia.org/wiki/List_of_periodic_comets

   In comet nomenclature, the letter before the "/" is either "C" (a non-periodic comet), "P" (a periodic comet), "D" (a comet that has been lost or has disintegrated), "X" (a comet for which no reliable orbit could be calculated —usually historical comets), "I" for an interstellar object, or "A" for an object that was either mistakenly ...

6. New findings show ancient comet likely responsible for glass ...

   www.aol.com/findings-show-ancient-comet-likely...

   The exploding comet also created tornado-force winds which hurtled the chunks of molten glass across the region. A comet glowing in the night sky just above the horizon. (Image/Alberto Agostini)

7. Lists of comets - Wikipedia

   en.wikipedia.org/wiki/Lists_of_comets

   Periodic comets usually have elongated elliptical orbits, and usually return to the vicinity of the Sun after a number of decades. The official names of non-periodic comets begin with a "C"; the names of periodic comets begin with "P" or a number followed by "P". Comets that have been lost or disappeared have names with a "D". Comets whose ...

8. Astronomers discover comet 100,000-times bigger than Halley's

   www.aol.com/news/2017-02-10-astronomers-discover...

   Scientists in Germany have observed a comet-like object in a distant galaxy that is similar in composition to the famed Halley's comet -- just a LOT bigger. Astronomers discover comet 100,000 ...

9. Comet - Wikipedia

   en.wikipedia.org/wiki/Comet

   Jupiter-family comets and long-period comets appear to follow very different fading laws. The JFCs are active over a lifetime of about 10,000 years or ~1,000 orbits whereas long-period comets fade much faster. Only 10% of the long-period comets survive more than 50 passages to small perihelion and only 1% of them survive more than 2,000 ...