Copyright:Daniel Korona
中文翻譯:
在美麗的墨西哥中央,夏天的夜空中有許多閃爍的螢火蟲,像是星星一樣在空中舞動。這些熠熠生輝的螢火蟲,和橫跨天際的銀河系一起,形成了一幅夢幻的畫面。你知道嗎?每年這個時候,天空中還會出現特別的流星雨,叫做Delta Aquariid流星雨!這些流星像是劃破天空的小光點,光芒四射,讓夜空增添了許多神秘的感覺。流星從水瓶座開始出現,而銀河系則在它們的上方,將整個夏夜的天空點綴得如夢似幻。大家可以在這些美麗的夜晚觀賞流星,或者試著捕捉那些閃爍的螢火蟲哦!
原文:
Taken on July 29 and July 30, a registered and stacked series of exposures creates this dreamlike view of a northern summer night. Multiple firefly flashes streak across the foreground as the luminous Milky Way arcs above the horizon in the Sierra de Órganos national park of central Mexico, The collection of bright streaks aligned across the sky toward the upper left in the timelapse image are Delta Aquariid meteors. Currently active, the annual Delta Aquarid meteor shower shares August nights though, overlapping with the better-known Perseid meteor shower. This year that makes post-midnight, mostly moonless skies in early August very popular with late night skygazers. How can you tell a Delta Aquariid from a Perseid meteor? The streaks of Perseid meteors can be traced back to an apparent radiant in the constellation Perseus. Delta Aquariids appear to emerge from the more southerly constellation Aquarius, beyond the top left of this frame. Of course, the bioluminescent flashes of fireflies are common too on these northern summer nights. But how can you tell a firefly from a meteor? Just try to catch one.
來源:NASA每日圖片