The Earth at Night

This great image has been around for many years, it's a composite of visible images from the Defense Meteorological Satellite Program (DMSP) satellites. Those satellites are nearing the end of their lifetime, and are to be replaced with the NPOESS system, that combines DoD and NOAA satellites.

Although DMSP was not intended to produce this type of image -- it was basically a weather satellite -- it has proven valuable because of its imaging capabilities and its long legacy in space. This has helped it to support studies on environmental changes, population shifts, etc.
 
As an astronomy buff, I look on this image somewhat sadly, as it shows me just how far away I need to go to get truly dark skies.
 
Some things that interest me in this picture:

- The Nile River. Truly a giver of life in an arid part of the world.
- India versus Pakistan.
- The concentration in China being so dominant in the Eastern part of their country.
- Sparseness of Australia's population centers relative to size of country
 
Some things that interest me in this picture:

- The Nile River. Truly a giver of life in an arid part of the world.
- India versus Pakistan.
- The concentration in China being so dominant in the Eastern part of their country.
- Sparseness of Australia's population centers relative to size of country

Also check out South Korea Vs. North Korea... As a geography freak I find this picture really cool.
 
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