Image: Chinese report of Halley's Comet apparition in 240 BC from the Shiji (史記)

Description: Report of Halley's Comet in 240 BC by Chinese astronomers from Sima Qian's Shiji (c. 109 BC-91 BC). "In the 7th year of Emperor Qin Shihuang of the Warring States, a broom star first appeared in the east, then it appeared in the north."
Title: Fig. 5.2. Chinese report of Comet Halley's apparition in 240 BC
Credit: Xu, Zhentao, David W. Pankenier, and Yaotiao Jiang. East Asian Archaeoastronomy: Historical Records of Astronomical Observations of China, Japan and Korea. Amsterdam, Netherlands: Earth Space Institute Series by Gordon and Breach Science, 2000. 109. Print.
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