Explanation: Adrift in the rich star fields of the constellation Cygnus, this lovely, symmetric bubble nebula was only recently recognized and may not yet appear in astronomical catalogs.

 
  • 說(shuō)明:漂泊在星云富集的天鵝座內,這個(gè)可愛(ài)、形狀對稱(chēng)的泡泡星云最近才被發(fā)現,所以不會(huì )出現在天文星云列表中。
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