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【宇宙杂谈】面纱星云惊现诡异直线！天鹅座环存在曲速航迹？
前段时间有小伙伴发来一组聊天截图，一位深空摄影爱好者在天鹅座的面纱星云中，发现了一条诡异的直线。这条直线非常笔直，直的完全不像是自然形成的，有点像飞机在空中留下的尾迹。于是大伙开始猜测：这难不成是外星飞船星际航行时留下的痕迹？
【宇宙杂谈】71/114
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