Zebrafish Thrive as Shenzhou-18 Crew Completes First Spacewalk

Four zebrafish sent to China's Tiangong space station are thriving after nearly a month in orbit, as part of a research project by the Chinese Academy of Sciences to study the effects of microgravity on vertebrates. The zebrafish, along with goldfish algae, are in good condition and are being observed for unusual behaviors and developmental changes. This research aims to understand the impact of space conditions on biological systems and has implications for long-duration space missions.