人造彗星
(原标题: An Artificial Comet)
2025-12-30
浏览次数: 1576
是的，但你的彗尾能做到这一点吗？不，你看到的不是彗星的尾巴。这张照片巧妙地叠加了一组卫星在6月份一起绕地球运行的延时序列。具体来说，这些是近地轨道上的星链通信卫星，在日出前反射回中国内蒙古的阳光。虽然卫星在人眼看来是点，但20秒长的相机曝光使它们看起来像短条纹。目前有超过9000个星链在轨道上运行，几乎每周都有更多的星链被发射。其他卫星星座也在规划中。探索宇宙：随机APOD生成器
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Yes, but can your comet tail do this? No, and what you are seeing is not the tail of a comet. The picture features a cleverly overlayed time-lapse sequence of a group of satellites orbiting Earth together in June. Specifically, these are Starlink communications satellites in low Earth orbit reflecting back sunlight before sunrise to Inner Mongolia, China. Although the satellites appear to the human eye as points, the 20-second-long camera exposures caused them to appear as short streaks. Currently there are over 9000 Starlinks in orbit, with more being launched nearly every week. Other satellite constellations are also being planned. Explore the Universe: Random APOD Generator
© Wang Chao