Copyright:Ron Brecher
中文翻譯:
在北方的星空中，有一片令人驚嘆的星空，它的寬度大約和三個滿月差不多。這片星空是英雄般的天龍座（Perseus）的一部分，裡面有著著名的雙生星團，叫做h和Chi Persei。這兩個星團，也叫做NGC 869（右邊）和NGC 884，距離我們大約有7,000光年，裡面充滿了比太陽年輕且更熱的星星。這兩個星團彼此相隔只有幾百光年，根據它們裡面星星的年齡，這兩個星團都只有1300萬年，這顯示它們可能是來自同一個星際產卵的地方。在暗黑的地方，這個迷人的雙星團可以用肉眼看到，使用雙筒望遠鏡或者小型望遠鏡觀看時會有更加美妙的體驗。
原文:
This stunning starfield spans about three full moons (1.5 degrees) across the heroic northern constellation of Perseus. It holds the famous pair of open star clusters, h and Chi Persei. Also cataloged as NGC 869 (right) and NGC 884, both clusters are about 7,000 light-years away and contain stars much younger and hotter than the Sun. Separated by only a few hundred light-years, the clusters are both 13 million years young based on the ages of their individual stars, evidence that both clusters were likely a product of the same star-forming region. Always a rewarding sight in binoculars or small telescopes, the Double Cluster is even visible to the unaided eye from dark locations.
來源:NASA每日圖片
