China's Shenzhou-21 crew continues with science experiments, life in orbit

China's Shenzhou-21 astronauts have continued scientific work aboard the space station over the past week. Mission commander Zhang Lu and astronauts Wu Fei and Zhang Hongzhang, in orbit for nearly 80 days, conducted tests with the intelligent robot Xiaohang and carried out space medical experiments using a Raman spectrometer to analyze metabolic components in urine samples.