ScienceCasts: 英仙座流星雨活跃的一年

本周,斯威夫特-塔特尔彗星将穿过地球,这是一年一度英仙座流星雨的母体。预报员说,8月12日至13日是高峰时,月亮是新月,所以今年可以很容易观测到。 更多内容请访问:。 点击这里查看更多视频: 这是2015年的视频

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