NASA·APOD每日天文一图2022.6.1 [超高清]
武仙座τ流星雨！！！
It wasn't the storm of the century -- but it was a night to remember. Last night was the peak of the Tau Herculids meteor shower, a usually modest dribble of occasional meteors originating from the disintegrating Comet 73P/Schwassmann-Wachmann 3. This year, calculations showed that the Earth might be passing through a particularly dense stream of comet debris -- at best creating a storm of bright meteors streaking out from the constellation of Hercules. What actually happened fell short of a meteor storm, but could be called a decent meteor shower. Featured here is a composite image taken at Kitt Peak National Observatory in Arizona, USA accumulated over 2.5 hours very late on May 30. Over that time, 19 Tau Herculids meteors were captured, along with 4 unrelated meteors. (Can you find them?) In the near foreground is the Bok 2.3-meter Telescope with the 4.0-meter Mayall Telescope just behind it. Next year, the annual Tau Herculids are expected to return to its normal low rate, with the next active night forecast for 2049.
这不是本世纪的最大流星暴，但这是一个值得纪念的夜晚。昨晚是武仙座流星雨的高峰期，通常是偶尔有少量流星从正在解体的彗星73P/Schwassmann-Wachmann 3上落下。今年，计算表明，地球可能正通过一条密度特别大的彗星碎片流，充其量也会产生一场从武仙座划出的明亮流星暴。事实上发生的事情并不是一场流星暴，但可以称之为一场极好的流星雨。5月30日晚些时候，美国亚利桑那州基特峰国家天文台（KittPeak National Observatory）拍摄了一张合成图像，累积时间超过2.5小时。在这段时间里，共捕获了19颗武仙座流星群内流星，以及4颗无关的流星。（你能找到他们吗？）近前景是博克2.3米望远镜，后面是4.0米的梅亚尔望远镜。明年，预计一年一度的武仙座流星雨ZHR数量将恢复到正常的低水平，预计2049年将是下一个活跃的夜晚。（翻译BySASU北斗星辰）
