Chinese city plans artificial moon to replace streetlights by 2020

China's Chengdu is reportedly planning to launch an illumination satellite, eight times brighter than the Moon, in 2020. The satellite's "dusk-like glow" would be able to light an area with a diameter of 10-80 km, enabling it to replace streetlights, as per private space contractor Casc. However, it is not clear whether the plan is backed by the Chinese government.