北夏暮
(原标题: Northern Summer Twilight)
2021-06-19
浏览次数: 31
随着北方夏至的临近，夜晚变短，白天变长。通常在夏季高纬度地区看到，夜光云或夜光云开始出现。6月14日，这些冰云漂浮在距离地球表面约80公里的太空边缘，仍在反射阳光。虽然在加拿大马尼托巴省福雷斯特北部看到的太阳在地平线以下，但他们在接近午夜黄昏的天空中拍摄了一次曝光。前景的多次曝光追踪了低空萤火虫的闪光，这是夏夜中一闪而过的幻影。
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Nights grow shorter and days grow longer as the summer solstice approaches in the north. Usually seen at high latitudes in summer months, noctilucent or night shining clouds begin to make their appearance. Drifting near the edge of space about 80 kilometers above the Earth's surface, these icy clouds were still reflecting the sunlight on June 14. Though the Sun was below the horizon as seen north of Forrest, Manitoba, Canada, they were caught in a single exposure of a near midnight twilight sky. Multiple exposures of the foreground track the lower altitude flash of fireflies, another fleeting apparition shining in the summer night.
© Justin Anderson