Classes from space: The three taikonauts Zhai Zhigang, Wang Yaping and Ye Guangfu conduct scientific experiments in zero gravity and present the Chinese space station to children via livestream. The crew of the Shenzhou-13 has been on mission for six months, and for the second time the space travelers have now been live-streamed into a classroom at the China Science and Technology Museum. Will that help against homesickness?