China News Service, Beijing, December 9th (Ma Shuaisha) According to the China Manned Space Engineering Office, at 15:40 on December 9th, Beijing time, the first lecture of "Tiangong Classroom" officially started, after 8 years, China The astronauts taught in space again.

"Space teachers" Zhai Zhigang, Wang Yaping, and Ye Guangfu brought a wonderful space science lesson to young people on the Chinese Space Station. This was the first space teaching activity on the Chinese Space Station.

  In the 60-minute lecture, the Shenzhou 13 flight crew astronauts Zhai Zhigang, Wang Yaping, and Ye Guangfu vividly introduced and demonstrated the work and life scenes of the space station, and demonstrated the magical phenomena of cytology experiments, human movement, liquid surface tension, etc. in a microgravity environment , And explained the scientific principles behind the experiment.

During the lecture, the astronauts had real-time interactive exchanges with teachers and students on the ground through video calls.

  The entire space teaching activity was broadcast live. The main ground class was set up in the China Science and Technology Museum, and 4 ground sub-classes were set up in Nanning, Guangxi, Wenchuan, Hong Kong, and Macau. A total of 1,420 representatives of primary and secondary school students participated in the on-site activities.

  In the water film tension experiment, Wang Yaping put the flower origami made with his daughter on the earth into the water film. The original small origami instantly bloomed into a beautiful "flower" in space.

Faced with 1,420 representatives of elementary and middle school students and students from all over the country who watched the live broadcast, Wang Yaping said: "Classmates, you are all flowers of the motherland, and the future is yours. I hope that your dreams can be in this vast universe. Bloom."

  In the effervescent tablet experiment, Wang Yaping put an effervescent tablet into a blue water ball. In a weightless environment, the effervescent tablet continuously produced bubbles, but never left the water ball.

Wang Yaping explained while experimenting: "The water polo ball has gradually become a bubble ball full of happy little bubbles, and there is a burst of fragrance along with the bubbles."

  According to reports, the teaching activity was co-sponsored by the China Manned Space Engineering Office in conjunction with the Ministry of Education, the Ministry of Science and Technology, the China Association for Science and Technology, and China Central Radio and Television.

In the future, "Tiangong Classroom" will continue to carry out space teaching activities, actively disseminate manned space knowledge and culture, and continue to carry out various forms and rich content of space science education.