China launches human embryo models

China has launched laboratory-grown human embryo models to its Tiangong space station aboard the Tianzhou 10 cargo spacecraft. This first-of-its-kind experiment, led by researchers from the China — Chinese Academy of Sciences including Leqian Yu, aims to study the effects of microgravity and cosmic radiation on early human development. The models, which mimic developmental stages between days 14 and 21 after fertilization, will grow in orbit for five days before being frozen and returned for analysis. The research is a foundational step towards understanding the biological challenges of human reproduction and long-term survival in space, with potential implications for future lunar and Mars missions, as well as insights into human development on Earth. Previous research by entities like University of Adelaide on sperm in simulated space conditions provides context for this ongoing effort.