Copyright:
Victor Sabet &
Julien De Winter
中文翻譯:
在遙遠的宇宙中，有一顆叫做3I/ATLAS的彗星正在穿越我們的太陽系。科學家們正在研究這顆彗星，以了解我們的太陽系有多典型。3I/ATLAS的特徵和我們太陽系裡的彗星相似，這意味著我們可能不是那麼特別。這顆彗星有著像太陽系彗星一樣的化學成分和噴發的塵埃。上個星期，在德州拍攝的照片中，我們可以看到它的綠色光暈，還有一條蔚藍的離子尾巴，這是由於太陽的風將它推開而形成的。它的反尾巴也是彗星的典型特徵。這顆彗星在十月底時最接近太陽，接著會在十二月中旬最接近地球，然後它會返回遙遠的星際空間，再也不會回來了。
原文:
How typical is our Solar System? Studying 3I/ATLAS, a comet just passing through, is providing clues. Confirmed previous interstellar visitors include an asteroid, a comet, a meteor, and a gas wind dominated by hydrogen and helium. Comet 3I/ATLAS appears relatively normal when compared to Solar System comets, therefore providing more evidence that our Solar System is a somewhat typical star system. For example, Comet 3I/ATLAS has a broadly similar chemical composition and ejected dust. The featured image was captured last week from Texas and shows a green coma, a wandering blue-tinted ion tail likely deflected by our Sun’s wind, and a slight anti-tail, all typical cometary attributes. The comet, visible with a telescope, passed its closest to the Sun in late October and will pass its closest to the Earth in mid-December, after which it will return to interstellar space and never return. Explore the Universe: Random APOD Generator
來源:NASA每日圖片
