noctilucent cloud

基本解释

The recent observations of noctilucent clouds at all kinds of latitudes provide an extra impetus to understand what is going on up there.
最近在各种纬度进行的夜光云观察，提供了了解天上发生着什么的特别动力。
It is the season for viewing Polar Mesospheric Clouds, and with our high beta-angle we were able to capture this thin layer of noctilucent clouds at sunset (6-25-2010).
到了观看极地中气层云的时候，在太空中使用高β角度，我们能捕捉到日落时刻这层薄薄的夜光云。
The sky over Omaha on July 14th, snapped by Mike Hollingshead at Extreme Instability 2. A rendering of the noctilucent clouds created from data obtained by Russel’s NASA project, AIM.
利用拉塞尔NASA项目获得的数据绘制的夜光云效果图。