China's in-orbit Shenzhou-16 crew, Jing Haipeng, Zhu Yangzhu and Gui Haichao, livestreamed the first science class from the Mengtian lab module of the China Space Station on Thursday. During the class, taikonauts answered a question on what protective measures have been taken by the space station against space junk.

About 2,800 students attended the class from five classrooms in north China's Beijing and Inner Mongolia Autonomous Region, east China's Zhejiang and Anhui provinces, and northwest China's Shaanxi Province.