英仙座火球和银河系
(原标题: A Perseid Fireball and the Milky Way)
2021-08-03
浏览次数: 33
它是明亮的、绿色的，在银河系中快速移动时闪闪发光。它留下的痕迹过了30分钟才消失。考虑到这一天是8月12日，而且它的方向远离英仙座，它很可能离穿过地球大气层的斯威夫特-塔特尔彗星的彗核有一小段距离，因此它是一年一度的英仙座流星雨的一部分。2018年，这位天文摄影师在中国湖北宜昌的一个山谷上空捕捉到了这颗火球。这条流星的条纹，也被拍到了，在左下方的火星方向附近结束。下周，2021年英仙座流星雨将再次达到高峰。今年，月亮将在太阳之后不久落下，留下一个理想的夜空，从地球上黑暗和晴朗的地方看到大量英仙座流星雨。在Facebook、Instagram或Twitter上关注APOD英文版
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It was bright and green and flashed as it moved quickly along the Milky Way. It left a trail that took 30 minutes to dissipate. Given the day, August 12, and the direction, away from Perseus, it was likely a small bit from the nucleus of Comet Swift-Tuttle plowing through the Earth's atmosphere -- and therefore part of the annual Perseids meteor shower. The astrophotographer captured the fireball as it shot across the sky in 2018 above a valley in Yichang, Hubei, China. The meteor's streak, also caught on video, ended near the direction of Mars on the lower left. Next week, the 2021 Perseids meteor shower will peak again. This year the Moon will set shortly after the Sun, leaving a night sky ideal for seeing lots of Perseids from dark and clear locations across planet Earth. Follow APOD in English on: Facebook, Instagram, or Twitter
© Dandan Huang