Copyright:
原文:
“Beautiful Nebula discovered between the Balance [Libra] & the Serpent [Serpens] …” begins the description of the 5th entry in 18th century astronomer Charles Messier’s famous catalog of nebulae and star clusters. Though it appeared to Messier to be fuzzy and round and without stars, Messier 5 (M5) is now known to be a globular star cluster, 100,000 stars or more, bound by gravity and packed into a region around 165 light-years in diameter. It lies some 25,000 light-years away. Roaming the halo of our galaxy, globular star clusters are ancient members of the Milky Way. M5 is one of the oldest globulars, its stars estimated to be nearly 13 billion years old. The beautiful star cluster is a popular target for Earthbound telescopes. Of course, deployed in low Earth orbit on April 25, 1990, the Hubble Space Telescope has also captured its own stunning close-up view that spans about 20 light-years near the central region of M5. Even close to its dense core at the left, the cluster’s aging red and blue giant stars and rejuvenated blue stragglers stand out in yellow and blue hues in the sharp color image.
中文翻譯:
🌌 美麗的星雲在天秤座 [Libra] 與蛇座 [Serpens] 之間被發現，這是18世紀天文學家查爾斯·梅西耶 (Charles Messier) 的著名星雲及星團目錄中的第五項條目。雖然梅西耶當時看到的星團看起來模糊而圓形，且沒有星星，但現在已知梅西耶 5 (M5) 是一個球狀星團，擁有超過100,000顆星星，受到重力束縛，並集中在直徑約165光年的區域內。它距離地球約25,000光年，游弋於我們銀河系的光暈中。M5 是最古老的球狀星團之一，其星星估計已有近130億年歷史。這個美麗的星團是一個受地球望遠鏡歡迎的目標。當然，發射於1990年4月25日的哈勃太空望遠鏡 (Hubble Space Telescope) 也捕捉到了其約20光年的中心區域的驚人特寫，近乎密集的核心左側，星團的老化紅色和藍色巨星以及重生的藍色劣星在鮮艷的黃色和藍色中脫穎而出，形成了清晰的彩色影像。
#M5 #Messier5 #GlobularCluster #HubbleSpaceTelescope #Astrophotography #StarCluster #BeautifulUniverse #Astronomy #MilkyWay #SpaceWonder #StarryNight 🌌✨
來源:NASA每日圖片
