北美星云
(原标题: The North America Nebula)
2025-01-22
浏览次数: 21
天空中的北美星云可以做到地球上的北美大陆做不到的事情——形成恒星。具体来说，与地球封闭的大陆类似，东岸的明亮部分实际上是气体、尘埃和新形成的恒星的热床，被称为天鹅座墙。这张特色图片显示了恒星形成的墙壁被明亮的年轻恒星照亮和侵蚀，部分被它们创造的黑暗尘埃所隐藏。所示的北美星云（ngc7000）的一部分跨度约50光年，距离天鹅星座（天鹅座）约1500光年。拼图挑战：当天的天文学难题
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The North America nebula on the sky can do what the North America continent on Earth cannot -- form stars. Specifically, in analogy to the Earth-confined continent, the bright part that appears as the east coast is actually a hot bed of gas, dust, and newly formed stars known as the Cygnus Wall. The featured image shows the star forming wall lit and eroded by bright young stars and partly hidden by the dark dust they have created. The part of the North America nebula (NGC 7000) shown spans about 50 light years and lies about 1,500 light years away toward the constellation of the Swan (Cygnus). Jigsaw Challenge: Astronomy Puzzle of the Day
© Dimitris Valianos