2025年8月3日
Milky Way and Exploding Meteor
Image Credit & Copyright: Andre van der Hoeven
Explanation: In about a week the Perseid Meteor Shower will reach its maximum. Grains of icy rock will streak across the sky as they evaporate during entry into Earth’s atmosphere. These grains were shed from Comet Swift-Tuttle. The Perseids result from the annual crossing of the Earth through Comet Swift-Tuttle‘s orbit, and are typically the most active meteor shower of the year. Although it is hard to predict the level of activity in any meteor shower, in a clear dark sky an observer might see a meteor a minute. This year’s Perseids peak just a few days after full moon, and so some faint meteors will be lost to the lunar skyglow. Meteor showers in general are best seen from a relaxing position, away from lights. Featured here is a meteor caught exploding during the 2015 Perseids above Austria next to the central band of our Milky Way Galaxy.
Tomorrow’s picture: arcs unknown
银河与炸裂的流星
影像提供与版权: Andre van der Hoeven
说明: 在下星期左右，英仙座流星雨将达到最大活动期。这些带冰的岩石碎片进入地球大气层时，会因高速磨擦而迅速蒸发，并划过天际。这些碎片来自斯威夫特·塔特尔彗星。英仙座流星雨源自于地球每年穿越斯威夫特·塔特尔彗星轨道留下的碎片，其通常是全年最活跃的流星雨。虽然预测任何流星雨的活动频率较为困难，但在晴朗的无光害的夜空中，观察者每分钟约可以看到一颗流星。今年的英仙座流星雨恰好在满月后几天达到高峰，因此一些黯淡的流星会被月光所遮掩。流星雨适合在远离城市光源的舒适位置欣赏。主题影像展示的是一颗流星在2015年英仙座流星雨期间于奥地利上空爆炸的瞬间，背景则是我们的银河的中央盘面。
明日的图片: arcs unknown
