Copyright:Jason Jennings
原文:
Connecting the Pipe Nebula to the colorful region near bright star Antares is a dark cloud dubbed the Dark River, flowing from the picture’s left edge. Murky looking, the Dark River’s appearance is caused by dust obscuring background starlight, although the dark nebula contains mostly hydrogen and molecular gas. Surrounded by dust, Antares, a red supergiant star, creates an unusual bright yellowish reflection nebula. Above it, bright blue double star Rho Ophiuchi is embedded in one of the more typical bluish reflection nebulae, while red emission nebulae are also scattered around the region. Globular star cluster M4 is just seen above and right of Antares, though it lies far behind the colorful clouds, at a distance of some 7,000 light-years. The Dark River itself is about 500 light years away. The colorful skyscape is a mosaic of telescopic images spanning nearly 10 degrees (20 Full Moons) across the sky in the constellation of the Scorpion (Scorpius). Follow APOD on: Facebook, Google Plus, or Twitter
中文翻譯:
連接喉管星雲（Pipe Nebula）同埋明亮星星安塔瑞斯（Antares）附近五光十色嘅區域，係一個被稱為黑河（Dark River）嘅暗雲，從畫面左邊流出。黑河嘅外觀因為塵埃遮擋咗後方嘅星光而顯得昏暗，雖然呢個暗星雲實際上主要由氫同分子氣體組成。安塔瑞斯，作為一顆紅超巨星，周圍產生咗一種不尋常嘅明亮黃色反射星雲。上方，明亮嘅雙星Rho Ophiuchi 係嵌入在一個更典型嘅藍色反射星雲入面，而紅色發射星雲則分佈喺周圍。球狀星團M4則位於安塔瑞斯上方稍右嘅位置，雖然佢距離呢啲色彩斑斕嘅雲彩相當遙遠，大約有7,000光年遠。黑河本身距離地球約500光年。呢個色彩繽紛嘅天體景觀係由天文望遠鏡拍攝嘅馬賽克圖片，橫跨近10度（20個滿月）喺蠍子座（Scorpius）嘅天空中。
#天文 #安塔瑞斯 #黑河 #蠍子座 #色彩斑斕 #宇宙之美 #天文攝影 #星雲探索
來源:NASA每日圖片
