星際彗星 3 I/ATLAS
Interstellar Comet 3I/ATLAS
發表日期：2025-07-07
它來自外太空。 一個來自太陽系外的天體正在高速透過。 3 I/ATLAS 因其氣態彗尾而被歸類為彗星，它是第三個被確認為如此外來的宏觀天體。彗星的軌跡在特寫地圖上以白色顯示，木星、火星和地球的軌道則以金色、紅色和藍色顯示。目前， 3 I/ATLAS 彗星與木星距離太陽的距離差不多，但正在接近，預計 10 月下旬在火星軌道內最接近太陽。 3 I/ATLAS 預計會在火星和木星附近經過，但不會靠近地球。 3 I/ATLAS 彗星的起源仍然未知。雖然最初的活動表明這是一顆相對正常的彗星，但未來對 3 I/ATLAS 的成分和性質的觀測肯定還會繼續。 拼湊起來每日天文拼圖
原文：It came from outer space. An object from outside our Solar System is now passing through at high speed. Classified as a comet because of its gaseous coma, 3I/ATLAS is only the third identified macroscopic object as being so alien. The comet's trajectory is shown in white on the featured map, where the orbits of Jupiter, Mars, and Earth are shown in gold, red, and blue. Currently Comet 3I/ATLAS is about the distance of Jupiter from the Sun -- but closing, with its closest approach to our Sun expected to be within the orbit of Mars in late October. Expected to pass near both Mars and Jupiter, 3I/ATLAS is not expected to pass close to the Earth. The origin of Comet 3I/ATLAS remains unknown. Although initial activity indicates a relatively normal comet, future observations about 3I/ATLAS' composition and nature will surely continue. Piece it All Together: Astronomy Puzzle of the Day
※ 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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