A broom of fire, a crying star: comets have many names in history. What did ancient cultures think about these celestial bodies? A lot actually.
 
Some of our sources on comet sighting for this episode where:
 
Peng Yoke Ho. Chinese Astronomical Records. "LI, QUI AND SHU: AN INTRODUCTION TO SCIENCE AND CIVILIZATION IN CHINA". Dover Publications, 2000.

Robert A. Gurval. “CAESAR'S COMET: THE POLITICS AND POETICS OF AN AUGUSTAN MYTH.” Memoirs of the American Academy in Rome, vol. 42, 1997.

Acosta, Joseph. "THE NATURAL AND MORAL HISTORY OF THE INDIES"

Recomended Wikipedia articles:
https://en.wikipedia.org/wiki/Historical_comet_observations_in_China
https://en.wikipedia.org/wiki/Observational_history_of_comets

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