3 I/ATLAS:從地球看世界
3I/ATLAS: A View from Planet Earth

來源:Rolando Ligustri|發表日期:2025-11-21
3 I/ATLAS 彗星於 10 月 29 日近日點或最接近太陽,現在已經飛離地球,它是第三顆經過我們太陽系的已知星際天體。 11 月 14 日,用小型望遠鏡從地球上拍攝到的這一景象顯示,在室女座恆星的背景下,彗星呈現出綠色的彗尾和微弱的尾巴。但這顆星際來客是正在進行的、前所未有的太陽系觀測活動的主題,從地球軌道到火星表面甚至更遠的地方,都有太空飛行器和太空望遠鏡參與觀測。雖然這顆來自另一個恆星系統的彗星最近變得更亮了,但如果你想從地球上看到 3 I/ATLAS,你仍然需要一臺望遠鏡。它現在已經出現在 11 月早晨天空的地平線之上,並將於 12 月 19 日左右在 2 . 7 億公里的距離上最接近地球。
原文:Now outbound after its perihelion or closest approach to the Sun on October 29, Comet 3I/ATLAS is only the third known interstellar object to pass through our fair Solar System. Its greenish coma and faint tails are seen against a background of stars in the constellation Virgo in this view from planet Earth, recorded with a small telescope on November 14. But this interstellar interloper is the subject of an on-going, unprecedented Solar System-wide observing campaign involving spacecraft and space telescopes from Earth orbit to the surface of Mars and beyond. And while the comet from another star-system has recently grown brighter, you'll still need a telescope if you want to see 3I/ATLAS from planet Earth. It's now above the horizon in November morning skies and will make its closest approach to Earth, a comfortable 270 million kilometers distant, around December 19.
※ 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。