三柱和喷流
(原标题: Trifid Pillars and Jets)
2026-05-03
浏览次数: 1537
尘埃柱就像星际山脉。它们之所以能存活下来，是因为它们的密度比周围的环境要大，但它们正在被恶劣的环境慢慢侵蚀。在哈勃太空望远镜拍摄的这张特色照片中，可以看到三裂星云（M20）中一根巨大的气体和尘埃柱的末端，中间有一根指向上方的小柱和一股指向左上角的不寻常的喷流。许多亮点是新形成的恒星。靠近小柱末端的一颗恒星正在被图像上方一颗非常明亮的恒星的辐射慢慢剥离其吸积气体。喷流延伸近一光年，没有外部照明是看不见的。随着气体和尘埃从柱子上蒸发，这种喷射的隐藏恒星来源可能会被发现，可能在未来2万年。探索宇宙：随机APOD生成器
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Dust pillars are like interstellar mountains. They survive because they are more dense than their surroundings, but they are slowly being eroded away by a hostile environment. Visible in the featured picture by the Hubble Space Telescope is the end of a huge gas and dust pillar in the Trifid Nebula (M20), punctuated by a smaller pillar pointing up and an unusual jet pointing to the upper left. Many of the bright dots are newly formed stars. A star near the small pillar's end is slowly being stripped of its accreting gas by radiation from a tremendously brighter star situated off the top of the image. The jet extends nearly a light-year and would not be visible without external illumination. As gas and dust evaporate from the pillars, the hidden stellar source of this jet will likely be uncovered, possibly over the next 20,000 years. Explore the Universe: Random APOD Generator