“Moon” light

Just because you can, does not mean you should is the take away for me on this one….. What do you lot think?


China is reportedly in the process of creating an “artificial moon” that would be bright enough to replace the streetlights in the south-western city of Chengdu by 2020.

Chinese scientists plan to send three artificial moons into space in the next four years, and the moons — made from reflective material like a mirror — are expected to orbit at 500 kilometres above the Earth and light up an area with a diameter of 10 to 80 kilometres.

I kind of get what they are doing, but am totally lost on the why.
The how should be interesting. I am sure before long, someone will provide a diagram on how they are going to reflect sunlight from behind the earth… Either that or 500 km’s is high enough for it to always be in sunlight?