動畫英仙座流星雨
Animation: Perseid Meteor Shower
發表日期:2024-08-11
英仙座流星體來自哪裡?英仙座流星體大多是小塊的石質砂礫,曾經從斯威夫特-塔特爾彗星排出,並繼續沿著這顆彗星的軌道慢慢消散。 這段動畫描述了整個流星體流繞太陽執行的過程。 當地球接近這股流星群時,英仙座流星雨就會出現,每年都是如此。 在動畫中,這種大小的彗星碎片通常非常暗淡,幾乎無法察覺。 這些碎片中只有一小部分會進入地球大氣層,加熱並解體,發出耀眼的光芒。 今晚和接下來的幾個夜晚將是觀看英仙座流星雨和其他活躍流星雨的最佳天空,因為從午夜開始,第一季度月亮將不會出現在天空中。 您的天空驚喜你的生日是哪一天? ( 1995 年後)
原文:Where do Perseid meteors come from? Mostly small bits of stony grit, Perseid meteoroids were once expelled from Comet Swift-Tuttle and continue to follow this comet's orbit as they slowly disperse. The featured animation depicts the entire meteoroid stream as it orbits our Sun. When the Earth nears this stream, as it does every year, the Perseid Meteor Shower occurs. Highlighted as bright in the animation, comet debris this size is usually so dim it is practically undetectable. Only a small fraction of this debris will enter the Earth's atmosphere, heat up and disintegrate brightly. Tonight and the next few nights promise some of the better skies to view the Perseid shower as well as other active showers because the first quarter moon will be absent from the sky from midnight onward. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)
※ 本文由萌芽機器人自動轉貼自每日一天文圖(Astronomy Picture of the Day,APOD),原文為英文,正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理,內容僅供參考,若有任何錯誤之處還請見諒!
關於每日一天文圖:每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務,網站每天提供一張影像或圖片,並由天文學家撰寫扼要說明其特別之處。