open star cluster

基本解釋

The Eagle Nebula, associated with the open star cluster M16, lies about 7000 light years away.
鷹狀星云，與疏散星團(tuán)M16在一起，距離地球7000光年遠(yuǎn)。
An open star cluster in the constellation Taurus, consisting of several hundred stars, of which six are visible to the naked eye.
昴星團(tuán)金牛星座中的疏散星團(tuán)，由幾百顆恒星組成，其中六顆星用肉眼可看到。
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.
疏散星團(tuán)NGC 7380，也叫巫師星云，這是WISE任務(wù)所拍照片的拼接圖，覆蓋區(qū)域在天空中大約相當(dāng)于滿月的5倍（約2.5度）。