CCTV News (News Network): At 15:44 today (March 23), the second lesson of "Tiangong Classroom" was held on the China Space Station, and "space teachers" Zhai Zhigang, Wang Yaping, and Ye Guangfu gave another wonderful space science popularization class to the students. The Central Radio and Television Station conducted a live broadcast of the whole process.
The lecture was co-sponsored by the China Manned Space Engineering Office, the Ministry of Education, the Ministry of Science and Technology, the China Association for Science and Technology, and the Central Radio and Television Corporation, and supported by the China Science and Technology Museum and the relevant participating units of the manned space engineering. There are main ground classrooms in the China Science and Technology Museum, and two ground sub-classrooms in Lhasa, Tibet and Urumqi, Xinjiang. In the about 45 minutes of lectures, the astronauts vividly demonstrated the space "ice and snow" experiment, the liquid bridge demonstration experiment, the water and oil separation experiment, and the space parabolic experiment in the microgravity environment, explained the scientific principles behind the experimental phenomena in a simple and simple way, and showed some space science facilities and introduced the work and life on the space station.
This is a space "ice and snow" experiment that demonstrates the crystallization of saturated liquids in weightlessness to students.
Liquid bridge demonstration experiment to demonstrate the surface tension of water in weightless environment to students.
During the lecture, the astronauts interacted with the teachers and students of the ground classroom through video calls.
Source: CCTV