Starry sky over Hustai National Park in Mongolia

Photo taken on Oct. 9, 2018 shows the starry sky over the Hustai National Park in Mongolia. (Photos: Xinhua)

Photo taken on Oct. 9, 2018 shows the starry sky over the Hustai National Park in Mongolia.

Photo taken on Oct. 9, 2018 shows the starry sky over the Hustai National Park in Mongolia.