三叉柱與噴流
Trifid Pillars and Jets
發表日期：2026-05-03
塵埃柱猶如星際山脈。它們之所以能夠存續，是因為其密度高於周圍環境，但正逐漸被惡劣的環境侵蝕殆盡。在這張由哈勃太空望遠鏡拍攝的圖片中，可見三葉星雲（M 20 ）中一座巨大氣體與塵埃柱的末端，其間點綴著一座向上延伸的小柱，以及一條指向左上方的奇特噴流。 許多明亮的點都是新形成的恆星。 位於小柱體末端附近的一顆恆星，正被影像頂部外側一顆亮度極高的恆星所發出的輻射，逐漸剝離其吸積的氣體。該噴流延伸近一光年，若無外部光照則無法被觀測到。隨著氣體和塵埃從柱體中蒸發，這股噴流背後隱藏的恆星源頭很可能在未來 2 萬年內逐漸顯露。探索宇宙：隨機APOD 生成器
原文：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
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。