The theme of the forum will be “protect the dark and quiet sky and promote the sustainable development of astronomical observations.” This forum aims to strengthen international exchanges and cooperation on the protection of the dark and quiet sky, and enhance public awareness of this valuable resource for the sustainable development of basic scientific research in astronomy.

The dark and quiet sky is a valuable natural resource and cultural heritage for the human beings, not only because it is an integral part of our ecological environment, but also as it provides astronomers with an indispensable resource for scientific investigations and explorations of the Universe.

Astronomers are doing researches to analyse and study the negative influences of the artificial light at night, the increasing number of satellites, and the radio emission on astronomical observations.

The forum invited experts from different countries to exchange their up-to-date studies and discuss the current status of the policies for the dark and quiet sky protection. This activity tends to link the basic astronomical research with the dark and quiet sky protection and enhance public awareness of protecting this valuable resource, not only for ecosystem, but also for the sustainable development of astronomical research.