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Moscow at Night
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Photo: NASA
This Photo that was
taken by the International Space Station Expedition 30 Crew on March 28, 2012
shows the Russian Capital’s City Lights as the Space Station made a night pass
over the area. In the foreground, one of the Space Station’s Solar Arrays can be
seen. A busy night-time scene has been captured in the background. To the
right, the different layers of Earth’s Atmosphere are visible as daylight
passes through. The Aurora Borealis is also visible in the picture. The green
color is caused by Oxygen Emissions while blue and purple are caused by
Nitrogen Atoms. A small sample of Airglow can be seen one the left side of the
image.The faint orange/gold line of Airglow is caused by ultraviolet radiation
exciting gas molecules in the upper portion of the atmosphere. Also visible in
the background is a star-filled sky.
Photo: NASA
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