Photo taken on Sept. 10, 2019 shows an interior view of Shanghai Planetarium in Shanghai, east China. Shanghai Planetarium, which is expected to open in 2021, was illuminated for the first time to celebrate the Mid-Autumn Festival. (Photos: Xinhua)

Photo taken on Sept. 12, 2019 shows the solar tower of Shanghai Planetarium in Shanghai, east China. Shanghai Planetarium, which is expected to open in 2021, was illuminated for the first time to celebrate the Mid-Autumn Festival.

Photo taken on Sept. 10, 2019 shows a dome screen theater at Shanghai Planetarium in Shanghai, east China. Shanghai Planetarium, which is expected to open in 2021, was illuminated for the first time to celebrate the Mid-Autumn Festival.

A woman stands at the roof of Shanghai Planetarium in Shanghai, east China, Sept. 10, 2019. Shanghai Planetarium, which is expected to open in 2021, was illuminated for the first time to celebrate the Mid-Autumn Festival.