Copyright:
Marcin Rosadziński
中文翻譯:
有一天，在星空中，很多流星像小彩球一樣從天上飛過來，這讓我們好奇：這些流星是從哪裡來的呢？其實，這些流星都是來自名叫Comet Swift-Tuttle的彗星！當我們在地球上看到流星時，它們似乎是從一個叫做Perseus的星座出來的。這就是為什麼這些流星雨叫做「英仙座流星雨」的原因！每年，當地球穿過彗星留下的塵埃時，流星就會在天空中閃爍。這幅照片記錄了2024年8月英仙座流星雨，其中有超過100顆流星在波蘭的比耶什恰迪山上劃過夜空。雖然今年的流星雨非常漂亮，但卻會遇到一輪明亮的月亮，讓我們在觀賞流星時需要提前找到合適的時機哦！
原文:
Where are all of these meteors coming from? In terms of direction on the sky, the pointed answer is the constellation of Perseus. That is why the meteor shower that peaks tonight is known as the Perseids — the meteors all appear to come from a radiant toward Perseus. In terms of parent body, though, the sand-sized debris that makes up the Perseids meteors come from Comet Swift-Tuttle. The comet follows a well-defined orbit around our Sun, and the part of the orbit that approaches Earth is superposed in front of Perseus. Therefore, when Earth crosses this orbit, the radiant point of falling debris appears in Perseus. Featured here, a composite image taken over six nights and containing over 100 meteors from 2024 August Perseids meteor shower shows many bright meteors that streaked over the Bieszczady Mountains in Poland. This year’s Perseids, usually one of the best meteor showers of the year, will compete with a bright moon that will rise, for many locations, soon after sunset.
來源:NASA每日圖片
