Are you interested in space knowledge? If so, meet our astronaut 1 , Jing Haipeng, Zhu yangzhu and Gui Haichao! On September 21, 2021, the three shenzhou-16 astronauts gave the fourth Tiangong class from 2 to students on the Earth.
This was the first 3 class from the Mengtian lab module (舱). The 48-minute-long class had three parts. First, the three astronauts talked about their life in the module. Next, they did four interesting 4 . In one of them, two astronauts lit a candle. They 5 students to do the same experiment on the Earth to find out the differences. At the end of the class, some students asked the astronauts some questions that they were most interested in, and the astronauts answered them 6 . Around 2, 800 students had the class in five classrooms that were set in five 7 cities. The main classroom was in Beihang university in Beijing. Gui Haichao 8 at the university as a teacher before he became an astronaut of shenzhou-
16. More than 2,400 students and teachers from the university and primary and middle schools went to the main classroom. "I can have the science class from space, so I felt excited. I was most interested in the candle experiment," said a primary school student from Beijing. "I really 9 to fly to space someday."
The "Tiangong class" was surely 10 . An increasing number of young people are becoming interested in space. And the Tiangong space station plays an important role in science popularization (普及) and education.
