WISPIT 2 b:系外行星在誕生盤上刻出缺口
WISPIT 2b: Exoplanet Carves Gap in Birth Disk

發表日期:2025-08-27
那個黃點是什麼?它是太陽系外一顆年輕的行星。這幅來自智利甚大望遠鏡的特寫圖片出人意料地捕捉到了一個遙遠的場景,就像我們的太陽系在大約 45 億年前誕生一樣。 雖然我們無法直視過去,看到地球的形成過程,但望遠鏡卻能讓我們看到類似的過程在遙遠的恆星周圍展開。 畫面中心是一顆年輕的類太陽恆星,它隱藏在一個日冕儀後面,日冕儀擋住了它的強光。 環繞恆星的是一個明亮、佈滿塵埃的原行星盤--行星的原材料。 間隙和同心環標誌著一個新生的世界正在其引力作用下聚集氣體和塵埃,為它繞恆星執行掃清道路。 雖然天文學家以前也曾拍攝過嵌入星盤的行星,但這是有史以來第一次觀測到系外行星在星盤中主動開闢出一條縫隙--這是行星雕刻過程中最早的直接一瞥。
原文:That yellow spot -- what is it? It's a young planet outside our Solar System. The featured image from the Very Large Telescope in Chile surprisingly captures a distant scene much like our own Solar System's birth, some 4.5 billion years ago. Although we can't look into the past and see Earth's formation directly, telescopes let us watch similar processes unfolding around distant stars. At the center of this frame lies a young Sun-like star, hidden behind a coronagraph that blocks its bright glare. Surrounding the star is a bright, dusty protoplanetary disk -- the raw material of planets. Gaps and concentric rings mark where a newborn world is gathering gas and dust under its gravity, clearing the way as it orbits the star. Although astronomers have imaged disk-embedded planets before, this is the first-ever observation of an exoplanet actively carving a gap within a disk -- the earliest direct glimpse of planetary sculpting in action.
※ 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!
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