Today marks World Earth Day. Photographers from China Star Vision Alliance (CSVA), a photography group, released a series of posters made with their starry photography works, appealing to this year's theme of "Restore Our Earth". (Photo: Lin Zixuan/CSVA via Renminhao Platform)

(Photo: Hu Ge/CSVA via Renminhao Platform)

(Photo: Lan Yanbin/CSVA via Renminhao Platform)

(Photo: Li Haihui/CSVA via Renminhao Platform)

(Photo: Shen Lin/CSVA via Renminhao Platform)

(Photo: Wangjin/CSVA via Renminhao Platform)

(Photo: Sun Qi/CSVA via Renminhao Platform)

(Photo: Xu Chen/CSVA via Renminhao Platform)

(Photo: Zhu Yang/CSVA via Renminhao Platform)

(Photo: Zhang Bingbing/CSVA via Renminhao Platform)

(Photo: Zhang Xiao/CSVA via Renminhao Platform)

(Photo: Zheng Huizhen/CSVA via Renminhao Platform)

(Photo: Zheng Jianfeng/CSVA via Renminhao Platform)