huangcongwq 发表于 2017-4-8 08:14

Comet Hale-Bopp’s Ancient Spectacle

http://www.skyandtelescope.com/observing/stargazers-corner/comet-hale-bopps-ancient-spectacle/?utm_source=newsletter&utm_campaign=sky-mya-nl-170407&utm_content=935172_EDT_SKY_170407&utm_medium=email
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