木星和双子座的流星
(原标题: Jupiter and the Meteors from Gemini)
2025-12-18
浏览次数: 1599
木星，太阳系的气态巨行星，是这张合成夜空中央最亮的天体灯塔。这一场景是通过从12月13日和14日晚上拍摄的约500张照片中选择40张包含流星的照片构建的，这两个夜晚接近今年双子座流星雨的高峰。在葡萄牙阿连特茹（Alentejo）上空的夜空中，每一次选定的曝光都显示，流星看起来确实像是从木星流出来的。但是，双子座流星雨的表面辐射实际上更接近明亮的双子星座蓖麻星。在这幅图中，它就在太阳系中质量最大的行星的左上方。尽管如此，双子座流星的母体已知是近地小行星3200法厄同。法厄同的轨道本身受到巨大木星的引力的影响，同时也受到内太阳系行星的影响。
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Jupiter, the Solar System's ruling gas giant, is the brightest celestial beacon at the center of this composite night skyscape. The scene was constructed by selecting the 40 exposures containing meteors from about 500 exposures made on the nights of December 13 and 14, near peak activity for this year's annual Geminid meteor shower. With each selected exposure registered in the night sky above Alentejo, Portugal, planet Earth, it does look like the meteors are streaming away from Jupiter. But the apparent radiant of the Geminid meteors is actually closer to bright star Castor, in the shower's eponymous constellation Gemini. In this frame that's just a little above and left of the Solar System's most massive planet. Still, the parent body of Geminid meteors is known to be rocky, near-Earth asteroid 3200 Phaethon. And the orbit of Phaethon itself is influenced by the gravitational attraction exerted by massive Jupiter, in concert with planets of the inner Solar System.
© David Cruz