我国首批“太空小鼠”返回后产仔

Core Insights - The successful birth of nine offspring from space mice after a 14-day space mission demonstrates that short-term spaceflight does not significantly impact the reproductive capabilities of mammals [1][4] - The research provides valuable samples for future studies on the effects of space environments on mammalian life [1][4] Group 1: Mission Overview - Four mice were launched into space on November 4, with an initial plan for a five-day mission, which was unexpectedly extended to 14 days due to delays in the return flight [2][3] - The research team faced challenges in ensuring the survival of the mice, particularly concerning food and water supplies during the extended mission [2][3] Group 2: Survival Strategies - The team coordinated with astronauts to provide water from the space station and selected soy milk as an emergency food substitute for the mice [3][4] - Extensive testing was conducted to ensure that the soy milk would not clog the feeding apparatus, allowing the mice to consume it successfully [3][4] Group 3: Post-Mission Observations - Upon return, the mice exhibited signs of weakness and significant weight loss, indicating the impact of microgravity on their muscle and skeletal systems [5] - The research team monitored the mice closely, leading to the discovery of mating behavior and the eventual birth of nine healthy pups [5] Group 4: Future Research Directions - The team plans to continue monitoring the offspring and conduct further studies on the physiological and genetic impacts of space environments on multiple generations of mammals [5] - Future missions aim to extend the duration of mice in space to 30 days to simulate human physiological conditions during long-term space travel [5]