The Shenzhou 16 crew will launch extravehicular activities in the near future. Nearly one-third of the space research trip has been completed. Deng Meng and reporter An Puzhong reported that the reporter learned from the China Manned Space Agency on the 19th that since the crew successfully entered the space station assembly on May 30, the crew of Shenzhou 16 astronauts has been in orbit for 51 days, and nearly one-third of the five month space research trip has been completed, The various space science practical (trial) verification tasks undertaken have been steadily progressing, and we will choose an opportunity to carry out the outbound activities in the near future. The crew of Shenzhou 16 is a new combination of three types of astronauts, including space pilots, space flight engineers and load experts. It is the first crew to enter the "National Spacelab" after it is fully completed. Since entry, facing the heavy task of space science practice (test), the crew quickly adapted to the environment and entered the state, carried out a series of space science practice (test) in the fields of life ecology, space Micro-g environment physics and other fields, and participated in the installation of the space radiation biology exposure experimental device of the Mengtian module, the gas cylinder of the space station electric propulsion system and other outbound installation work. Among them, the biological exposure experiment of extravehicular radiation was conducted for the first time in China. The use of this radiation device for research will provide strong support for radiation damage, genetic variation, radiation protection drug preparation, and radiation risk biological assessment of human organisms. It is of positive significance for ensuring the long-term healthy stay of astronauts in orbit and promoting the implementation of manned lunar landing plans. Through the installation of gas cylinders in the electric propulsion system in orbit, the "gas exchange" method was used for the first time to complete the replenishment of electric propellants, which will be used for long-term orbit maintenance of the space station and improve the economy and efficiency of its operation. At present, the crew of Shenzhou 16 is in good condition, the space station assembly is running stably, and the conditions for carrying out extravehicular activities are available. (New News Agency)