China has announced the launch of three artificial moons into space over the next four years to illuminate cities at night & reduce the need for street lights.

The first moon will be eight times brighter than the real moon and will be launched in 2020 over the south-western city of Chengdu.

The audacious plan has been greeted with some sceptics and rightly so says Dr Alan Duffy, Astronomer and a research fellow at Swinburne University of Technology, Melbourne.

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