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China to launch lunar lighting in outer space
China is planning to launch its own 'artificial moon' by 2020 to replace streetlamps and lower electricity costs in urban areas, state media reported on Friday.
Estimating wealth from outer space
They found that it is possible to make inferences about the wealth of a region by measuring the amount of nighttime illumination. While this has been used for large geographic units such as countries, the two researchers can now show that this also works for individual settlements within a given country.

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