Footage from the Tiangong space station shows Shenzhou 18 crew members — commander Ye Guangfu and cremates Li Cong and Li Guangsu — engaged in research on the adaptability of anaerobic archaea.br br The research aims to test their survival under Mars-like conditions and extreme cosmic radiation, contributing to the search for extraterrestrial life, according to a report from CCTV.br br Credit: Space.