哈雷尘埃的七年
(原标题: Seven Years of Halley Dust)
2022-10-28
浏览次数: 15
历史上第一颗已知的周期彗星哈雷彗星（1P/哈雷彗星）每75年左右返回太阳系内部。这颗著名的彗星最后一次裸眼出现是在1986年。但是在每年的两次流星雨中，我们可以看到哈雷彗星的尘埃碎片像雨一样划过地球的天空，这两次流星雨分别是5月的埃塔水瓶座流星雨和10月的猎户座流星雨。包括10月21日最大流星雨附近的流星，这张合成视图汇编了从2015年到2022年捕获的猎户座流星。在全景夜空中记录了大约47颗明亮的流星。在沿着银河系延伸的星光背景下，猎户座的流星似乎都是从我们熟悉的猎户星座参宿四以北的一个点辐射出来的。前景是斯洛伐克东部靠近普雷索夫市的山脉。
查看原文解释
History's first known periodic comet Halley (1P/Halley) returns to the inner Solar System every 75 years or so. The famous comet made its last appearance to the naked-eye in 1986. But dusty debris from Comet Halley can be seen raining through planet Earth's skies twice a year during two annual meteor showers, the Eta Aquarids in May and the Orionids in October. Including meteors near the shower maximum on October 21, this composite view compiles Orionid meteors captured from years 2015 through 2022. About 47 bright meteors are registered in the panoramic night skyscape. Against a starry background extending along the Milky Way, the Orionid meteors all seem to radiate from a point just north of Betelgeuse in the familiar constellation of the Hunter. In the foreground are mountains in eastern Slovakia near the city of Presov.
© Petr Horalek