天空的脉络─夜光云
See Explanation. Clicking on the picture will download the highest resolution version available.
请参阅说明。单击图片将下载可用的最高分辨率版本。
夜光云
天文·每日一图
美国佛罗里达州上空的夜光云
A dawn sky is shown that is black at the top and brown near the horizon. Wispy clouds converge on the right turning from a white to a blue hue. Near the apex of this convergence is a crescent moon. Please see the explanation for more detailed information.
画面中展示的是黎明时分的天空，顶部是黑色，接近地平线的地方是棕色。右侧有几缕云彩汇聚在一起，颜色从白色逐渐变为蓝色。在汇聚的顶端有一弯新月。有关更多详细信息，请参阅说明。
天文·每日一图
亚得里亚海上空的新智彗星
2022年7月26日 Comet NEOWISE Rising over the Adriatic Sea Video Credit & Copyright: Paolo Girotti Explanation: This sight was worth getting out of bed early. Two years ago this month, Comet C/2020 F3 (NEOWISE) rose before dawn to the delight of northern sky enthusiasts awake that early. Up before s
天文·每日一图
巴黎上空的夜光云
2022年7月12日 Noctilucent Clouds over Paris Credit & Copyright: Bertrand Kulik Explanation: It’s northern noctilucent cloud season. Composed of small ice crystals forming only during specific conditions in the upper atmosphere, noctilucent clouds may become visible at sunset during late summ
天文·每日一图
太空的边缘
2021年7月24日 The Edge of Space Image Credit & Copyright: Ralf Rohner Explanation: Where does space begin? For purposes of spaceflight some would say at the Karman line, currently defined as an altitude of 100 kilometers (60 miles). Others might place a line 80 kilometers (50 miles) above Earth
天文·每日一图
北半球夏季的暮光时分
2021年06月19日 Northern Summer Twilight Image Credit & Copyright: Justin Anderson Explanation: 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 appearanc
天文·每日一图
亚得里亚海上空的NEOWISE彗星
2020年7月13日 Comet NEOWISE Rising over the Adriatic Sea Video Credit & Copyright: Paolo Girotti Explanation: This sight was worth getting out of bed early. Comet C/2020 F3 (NEOWISE) has been rising before dawn during the past week to the delight of northern sky enthusiasts awake that early. Up be
天文·每日一图
夜光云
2020 June 19 The Veins of Heaven Image Credit & Copyright: Ruslan Merzlyakov (RMS Photography) Explanation: Transfusing sunlight through a darkened sky, this beautiful display of noctilucent clouds was captured earlier this week, reflected in calm waters from Nykobing Mors, Denmark. From the ed
天文·每日一图
天空的脉络
2019 July 26 The Veins of Heaven Image Credit & Copyright: P-M Hedén (Clear Skies, TWAN) Explanation: Transfusing sunlight through a still dark sky, this exceptional display of noctilucent clouds was captured earlier this month, reflected in the calm waters of Vallentuna Lake near Stockholm, Swe