阿特拉斯：星际彗星的尾巴
(原标题: 3I ATLAS: Tails of an Interstellar Comet)
2025-12-01
浏览次数: 1487
我们的太阳系有多典型？研究一颗刚刚经过的彗星3I/ATLAS提供了线索。先前确认的星际访客包括一颗小行星、一颗彗星、一颗流星和一股由氢和氦主导的气体风。与太阳系的彗星相比，彗星3I/ATLAS看起来相对正常，因此提供了更多的证据，证明我们的太阳系是一个典型的恒星系统。例如，彗星3I/ATLAS具有大致相似的化学成分和喷射尘埃。这张特色图片是上周在德克萨斯州拍摄的，它显示了一个绿色的彗发，一个可能被太阳风偏转的蓝色离子尾巴，还有一个轻微的反尾巴，这些都是典型的彗星特征。这颗彗星可以用望远镜看到，它在10月下旬经过最近的太阳，并将在12月中旬经过最近的地球，之后它将返回星际空间，再也不会回来。探索宇宙：随机APOD生成器
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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
© Victor Sabet & Julien De Winter