太陽系外行星系統 (繪架座 beta) 的彗星
Eight years of measurements from the HARPS spectrograph in Chile have revealed two distinct populations of comets in the forming planetary system around Beta Pictoris, Flavien Kiefer (Paris Institute of Astrophysics) and colleagues report in the October 23rd Nature.
http://www.skyandtelescope.com/astronomy-news/two-exocomet-populations-around-beta-pictoris-10272014/?et_mid=701057&rid=246425201
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