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原文:
What makes this spiral galaxy so long? Measuring over 700,000 light years across from top to bottom, NGC 6872, also known as the Condor galaxy, is one of the most elongated barred spiral galaxies known. The galaxy’s protracted shape likely results from its continuing collision with the smaller galaxy IC 4970, visible just above center. Of particular interest is NGC 6872’s spiral arm on the upper left, as pictured here, which exhibits an unusually high amount of blue star forming regions. The light we see today left these colliding giants before the days of the dinosaurs, about 300 million years ago. NGC 6872 is visible with a small telescope toward the constellation of the Peacock (Pavo).
中文翻譯:
🌌 為什麼這個螺旋星系如此細長？
從頂部到底部，NGC 6872（也稱為Condor星系）長達超過700,000光年，是已知的最細長的 barred spiral 星系之一。這個星系的延展形狀可能是由於它正與較小的星系IC 4970發生持續碰撞，IC 4970可見於畫面中央上方。
特別引人注目的是NGC 6872的上方左側螺旋臂，該處有著異常高數量的藍色星形成區域。今天我們所見的光是約3億年前離開這些碰撞巨體的，正值恐龍時代之前。NGC 6872在孔雀座（Pavo）方向上的小望遠鏡就能觀察到。
#NGC6872 #CondorGalaxy #宇宙之美 #螺旋星系 #星系碰撞 #天文學 #孔雀座 #星空追尋 #藍色星區 #星際探險
來源:NASA每日圖片
