美国国家航空航天局NASA每日一图(天文)-2017年7月26日

2017 July 26

The Milky Way over Monument Valley
Image Credit & Copyright: Tom Masterson
Explanation: You don't have to be at Monument Valley to see the Milky Way arc across the sky like this -- but it helps. Only at Monument Valley USA would you see a picturesque foreground that includes these iconic rock peaks called buttes. Buttes are composed of hard rock left behind after water has eroded away the surrounding soft rock. In the featured image taken a month ago, the closest butte on the left and the butte to its right are known as the Mittens, while Merrick Butte can be seen farther to the right. Green airglow fans up from the horizon. High overhead stretches a band of diffuse light that is the central disk of our spiral Milky Way Galaxy. The band of the Milky Way can be spotted by almost anyone on almost any clear night when far enough from a city and surrounding bright lights, but a sensitive digital camera is needed to capture these colors in a dark night sky.

2017年7月26日

纪念碑谷银河
图像信用与版权所有: Tom Masterson
说明: 你不必在纪念碑谷看到这样的天空,就像这样。只有在纪念碑谷 美国,你会看到一个 风景如画的前景,包括这些标志性的岩石峰值称为 公寓。水是腐蚀掉周围的软岩后,剩下的坚硬岩石组成的。在一个月前拍摄的 特色图像中,左边的最接近的小 饰物和右边的小帽被称为连 指手套,而 Merrick Butte 则可以看得更远。绿色气球从地平线上升。高架高架延伸 了一束漫射光,这是我们的旋转 银河系的中心盘 。银河系的乐队几乎可以在几乎任何一个清晰的夜晚 被 发现,距离一个城市和 周围的明亮的灯光足够远,但是需要一个敏感的数码相机在黑暗的夜晚捕捉这些颜色。

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