Why China's Artificial Moon Probably Won't Work

To step outside on a moonlit night is to see the darkness pushed back. The reflected sunlight from our natural satellite during a nearly full moon is enough to limn the nighttime landscape in silver and allow even human eyes to penetrate the gloom. But we can always do better, right? If one moon is good, surely two is even better.
 One Chinese researcher thinks so, at least. Wu Chunfeng, head of the Tian Fu New Area Science Society, wants to use a satellite like an