突尼斯上空的流星风
(原标题: A Meteor Wind over Tunisia)
2022-08-16
浏览次数: 16
地球曾经穿过流星风吗？是的，它们经常以流星雨的形式出现。几乎所有的流星都是从绕太阳运行的彗星或小行星上逃逸出来的沙粒大小的碎片，这些碎片继续在绕太阳的细长轨道上运行。我们的地球绕着同一个太阳转，可以穿过轨道上的碎片流，随着时间的推移，它可能会以流星风的形式出现。然而，在地球大气层中发光的流星通常会被破坏。然而，它们的条纹都可以追溯到天空中一个被称为辐射点的点。7月下旬，在南部三角洲水瓶座流星雨的高峰期，在突尼斯古老的柏柏尔村庄Zriba El Alia附近拍摄了两天的特色合成图像。辐射点在图像的右侧。几天前，我们的地球经历了一场更著名的流星雨的高峰——英仙座流星雨。
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Does the Earth ever pass through a wind of meteors? Yes, and they are frequently visible as meteor showers. Almost all meteors are sand-sized debris that escaped from a Sun-orbiting comet or asteroid, debris that continues in an elongated orbit around the Sun. Circling the same Sun, our Earth can move through an orbiting debris stream, where it can appear, over time, as a meteor wind. The meteors that light up in Earth's atmosphere, however, are usually destroyed. Their streaks, though, can all be traced back to a single point on the sky called the radiant. The featured image composite was taken over two days in late July near the ancient Berber village Zriba El Alia in Tunisia, during the peak of the Southern Delta Aquariids meteor shower. The radiant is to the right of the image. A few days ago our Earth experienced the peak of a more famous meteor wind -- the Perseids.
© Makrem Larnaout