open star cluster

基本解释

The Eagle Nebula, associated with the open star cluster M16, lies about 7000 light years away.
鹰状星云，与疏散星团M16在一起，距离地球7000光年远。
An open star cluster in the constellation Taurus, consisting of several hundred stars, of which six are visible to the naked eye.
昴星团金牛星座中的疏散星团，由几百颗恒星组成，其中六颗星用肉眼可看到。
This image of the open star cluster NGC 7380, also known as the Wizard Nebula, is a mosaic of images from the WISE mission spanning an area on the sky of about 5 times the size of the full moon.
疏散星团NGC 7380，也叫巫师星云，这是WISE任务所拍照片的拼接图，覆盖区域在天空中大约相当于满月的5倍（约2.5度）。