Copyright:
Simon Addis
原文:
What’s that inside the Heart Nebula? First, the large emission nebula dubbed IC 1805 looks, in whole, like a human heart. The nebula glows brightly in red light emitted by its most prominent element: hydrogen. The red glow and the larger shape are all created by a small group of stars near the nebula’s center. In the center of the Heart Nebula are young stars from the open star cluster Melotte 15 that are eroding away several picturesque dust pillars with their energetic light and winds. The open cluster of stars contains a few bright stars nearly 50 times the mass of our Sun, many dim stars only a fraction of the mass of our Sun, and an absent microquasar that was expelled millions of years ago. The Heart Nebula is located about 7,500 light years away toward the constellation of Cassiopeia. At the top right is the companion Fishhead Nebula.
中文翻譯:
❤️ 在心臟星雲（Heart Nebula）裡面有什麼？這個名為 IC 1805 的大發射星雲整體上看起來像一顆人心。它因為氫的光輝而發出耀眼的紅光。這種紅光和整體形狀都是由位於星雲中心的一小群年輕恆星所產生的。心臟星雲的中心有一個開放星團，稱為 Melotte 15，這群年輕恆星的能量光線和風正在侵蝕數個如畫的塵埃柱。
該星團中有一些亮星質量接近我們太陽的 50 倍，也有許多微弱的恆星質量只有太陽的一小部分，並且還有一顆在數百萬年前被驅逐的微噴流星。心臟星雲距離地球約 7,500 光年，位於仙后座（Cassiopeia）方向。右上角是伴星魚頭星雲（Fishhead Nebula）。
#心臟星雲 #IC1805 #Melotte15 #星雲 #天文學 #仙后座 #宇宙之美 #太空探索 #年輕恆星 #紅光 #塵埃柱
來源:NASA每日圖片
