彗星
哈雷彗星
Halley's Comet
The comet that returns about every 76 years
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简介
1P/Halley is the most famous periodic comet, observed and recorded for more than two thousand years. In 1986 ESA's Giotto probe imaged its nucleus from under 600 km, revealing a very dark surface.
你知道吗？
The Eta Aquariid (May) and Orionid (October) meteor showers come from its debris.