March 30, 240 B.C.E.: Halley’s Comet over China

In 240 B.C.E., Chinese astronomers spotted Comet Halley in an observation that would become the earliest-known written record of Earth’s regular visitor. Writing in the Shiji chronicles a little more than a century later, Sima Qian reported: “In the seventh year of Emperor Qin Shihuang of the Warring States, a broom star first appeared in Continue reading "March 30, 240 B.C.E.: Halley’s Comet over China" The post March 30, 240 B.C.E.: Halley’s Comet over China appeared first on Astronomy Magazine .

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