Dhaka, June 22 -- The three astronauts aboard China's Shenzhou-23 mission have completed their first in-orbit medical rescue training since arriving at the Tiangong space station, according to a video released by the China Manned Space Agency (CMSA).

The training was designed to help astronauts Zhu Yangzhu, Zhang Zhiyuan and Li Jiaying become familiar with rescue operation techniques and the characteristics of force application in a microgravity environment, the CMSA said in the video released on Sunday.

Apart from the medical rescue exercise, the crew has been carrying out a variety of scientific experiments. Using a space Raman spectrometer, they studied the relationship between gut microbiota and nutritional metabolism during long-du...