流星雨：英仙座的英仙座流星雨
(原标题: Meteor Shower: Perseids from Perseus)
2023-08-09
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这周是看流星的好时机。在英仙座流星雨的高峰期，彗星尘埃将像雨点一样落在地球上，划过黑暗的天空。这张特色合成图像是在2018年英仙座流星雨期间在斯洛伐克的Poloniny Dark Sky公园拍摄的。前景中天文台的圆顶位于科洛尼卡天文台的场地上。虽然彗星尘埃粒子彼此平行移动，但由此产生的流星雨显然是从英仙座天空中的一个点辐射出来的。辐射效应是由透视造成的，因为平行轨道在远处看起来像火车轨道一样汇聚。英仙座流星雨预计将在周六午夜后达到最高峰。由于新月在那天晚上很晚才会升起，无云的天空将比平时更暗，这使得今年有可能看到大量微弱的流星。
查看原文解释
This is a good week to see meteors. Comet dust will rain down on planet Earth, streaking through dark skies during peak nights of the annual Perseid Meteor Shower. The featured composite image was taken during the 2018 Perseids from the Poloniny Dark Sky Park in Slovakia. The dome of the observatory in the foreground is on the grounds of Kolonica Observatory. Although the comet dust particles travel parallel to each other, the resulting shower meteors clearly seem to radiate from a single point on the sky in the eponymous constellation Perseus. The radiant effect is due to perspective, as the parallel tracks appear to converge at a distance, like train tracks. The Perseid Meteor Shower is expected to reach its highest peak on Saturday after midnight. Since a crescent Moon will rise only very late that night, cloudless skies will be darker than usual, making a high number of faint meteors potentially visible this year.
© Petr Horálek / Institute of Physics in Opava