On March 23, the second lesson of "Tiangong Classroom" was held at the Chinese Space Station.

Shenzhou 13 crew astronauts Zhai Zhigang, Wang Yaping and Ye Guangfu cooperated with each other to give lectures.

In the space parabolic experiment, after being thrown by Wang Yaping, Bing Dundun still moved forward at a constant speed in the original direction.

Why do you want to do this experiment on the space station?

Let's listen to what Zhang Jian, a teacher in the main classroom of Tiangong Classroom and a physics teacher in the Second Affiliated Middle School of Beijing Normal University, has to say.

(The production of Li Jiali's video comes from China Science and Technology Museum)

Responsible editor: [Zhang Aolin]