Shenzhou 13 astronauts Zhai Zhigang, Wang Yaping, Ye Guangfu did space classroom lectures.

A, space lecture

1, Shenzhou 10 astronaut Wang Yaping 10:00 am Beijing time on June 20, 2013 in space to the ground students, the space lecture is mainly oriented to primary and secondary school students, so that they understand the characteristics of the movement of the object under the conditions of micro-gravity, the role of the liquid surface tension, deepen the understanding of mass, weight, and the role of Newton's surface tension. The lecture is aimed at primary and secondary school students to help them understand the characteristics of the motion of objects in microgravity, the role of surface tension of liquids, and to deepen their understanding of basic physical concepts such as mass, weight and Newton's laws. The astronauts will conduct on-orbit lectures and experimental demonstrations, as well as two-way interactive exchanges with teachers and students on the ground.

2. At 15:40 on December 9, 2021, the first lesson of the "Tiangong Classroom" will begin, and astronauts Zhai Zhigang, Wang Yaping, and Ye Guangfu of the Shenzhou XIII crew will give space lectures from the Chinese space station. 3 astronauts will introduce and show the working and living scenes of the Chinese space station in orbit, and demonstrate the working and living scenes in microgravity environment. The three astronauts will introduce and show the working and living scenes of the Chinese space station in orbit, demonstrate microgravity environment, cytology experiments, object movement, liquid surface tension and other phenomena, and communicate with the ground classroom in real time.

The significance of the lectures

1. The "space lectures" part of the space mission aims to stimulate primary and secondary school students' desire for the cosmic space and their enthusiasm for learning science and technology, and to make primary and secondary school students come close to the space, understand the space, and love the space.

2. As the second country to complete space lectures after the U.S., the space lectures will not only enhance the interest of the whole nation in space, but also promote the development of the large-capacity information processing industry of heaven and earth in terms of application, and the coming of the era of big data will be an opportunity for the development of the large-capacity information processing industry of heaven and earth.

3. At the same time, this also means that China has been able to carry out real-time monitoring of extraterrestrial spacecraft for at least 40 minutes, which means that China already has the ability to make adjustments to and monitor intercontinental missiles throughout the process.