Copyright:
Andr� van der Hoeven
原文:
Stars can form in colorful surroundings. Featured here is a star forming region rich in glowing gas and dark dust toward the constellation of the Swan (Cygnus), near the bright star Sadr. This region, which spans about 50 light years, is part of the Gamma Cygni nebula which lies about 1,800 light years distant. Toward the right of the image is Barnard 344, a dark and twisted dust cloud rich in cool molecular gas. A dramatic wall of dust and red-glowing hydrogen gas forms a line down the picture center. While the glowing red gas is indicative of small emission nebulas, the blue tinted areas are reflection nebulas — starlight reflecting from usually dark dust grains. The Gamma Cygni nebula will likely not last the next billion years, as most of the bright young stars will explode, most of the dust will be destroyed, and most of the gas will drift away. Explore a Virtual Universe: Random APOD Generator
中文翻譯:
在繽紛的環境中，星星正在形成。這幅圖像展示了位於天鵝座(Cygnus)的恆星形成區域，圍繞著明亮的星星Sadr，充滿了閃爍的氣體和暗淡的塵埃。這個區域橫跨約50光年，屬於伽馬天鵝星雲(Gamma Cygni nebula)，距離我們約1,800光年。圖像右側是巴納德344(Barnard 344)，這是一團扭曲且黑暗的塵埃雲，富含冷的分子氣體。畫面中央是一道壯觀的塵埃和紅色氫氣的牆。閃爍的紅色氣體顯示出小型發射星雲的存在，而藍色的區域則是反射星雲——星光反射自通常較暗的塵埃顆粒。伽馬天鵝星雲可能不會在下個十億年內持續存在，因為大多數明亮年輕的星星將會爆炸，大部分塵埃將會被摧毀，氣體也會隨之漂流。
#星星形成 #伽馬天鵝星雲 #巴納德344 #宇宙之美 #天文學 #星雲 #黑暗塵埃 #紅氫氣體 #探索宇宙 #天文照片
來源:NASA每日圖片
