光學和 X 射線中的貓眼星雲
The Cat's Eye Nebula in Optical and X-ray
發表日期：2024-01-07
對有些人來說，它看起來像一隻貓眼。對其他人來說，也許就像一個巨大的宇宙海螺殼。 實際上，它是目前已知的最明亮、最細緻的行星狀星雲之一，由一顆類太陽恆星在生命末期短暫而輝煌的階段排出的氣體組成。這個星雲垂死的中心恆星可能是在一系列有規律的抽搐中甩掉了外層，從而形成了外層的圓形同心殼。然而，人們對美麗、複雜而又對稱的內部結構的形成還不甚瞭解。特寫圖片是哈勃太空望遠鏡的數字銳化影像與軌道錢德拉天文臺捕捉到的 X 射線光的合成圖。 這座精美的漂浮太空雕像橫跨半個光年。當然，凝視著這隻貓眼，人類很可能會看到我們太陽的命運，它註定要在大約 50 億年後進入自己的行星星雲演化階段......。 免費 APOD 講座： 2024 年 1 月 9 日，紐約業餘天文學家協會
原文：To some it looks like a cat's eye. To others, perhaps like a giant cosmic conch shell. It is actually one of the brightest and most highly detailed planetary nebula known, composed of gas expelled in the brief yet glorious phase near the end of life of a Sun-like star. This nebula's dying central star may have produced the outer circular concentric shells by shrugging off outer layers in a series of regular convulsions. The formation of the beautiful, complex-yet-symmetric inner structures, however, is not well understood. The featured image is a composite of a digitally sharpened Hubble Space Telescope image with X-ray light captured by the orbiting Chandra Observatory. The exquisite floating space statue spans over half a light-year across. Of course, gazing into this Cat's Eye, humanity may well be seeing the fate of our sun, destined to enter its own planetary nebula phase of evolution ... in about 5 billion years. Free APOD Lecture: January 9, 2024 to the Amateur Astronomers of Association of New York
※ 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。