星际彗星3I/ATLAS
(原标题: Interstellar Comet 3I/ATLAS)
2025-07-07
浏览次数: 1474
它来自外太空。一个来自太阳系外的物体正在高速穿过。由于其气体彗发而被归类为彗星，3I/ATLAS是第三个被确定为如此陌生的宏观天体。在这张特色地图上，彗星的轨道以白色显示，木星、火星和地球的轨道以金色、红色和蓝色显示。目前，3I/ATLAS彗星与太阳的距离大约是木星与太阳的距离，但正在接近，预计它最接近太阳的地方是10月底的火星轨道内。预计3I/ATLAS将同时经过火星和木星附近，但不会靠近地球。彗星3I/ATLAS的起源仍然未知。虽然最初的活动表明这是一颗相对正常的彗星，但未来对3I/ATLAS的组成和性质的观测肯定会继续。拼凑起来：当天的天文学难题
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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