Core Points - The Shenzhou 21 mission marks the first time that mammals, specifically mice, are sent to the Chinese space station for scientific experiments [4][3] - The inclusion of mice aims to validate their ability to live and reproduce in microgravity, laying the groundwork for future space life science experiments [3][4] - The presence of these small mammals is expected to enhance the astronauts' experience in space, providing companionship and contributing to the overall research objectives [8][6] Summary by Sections - **Mission Overview** - Shenzhou 21 will carry selected mice to the space station, referred to as "space mice," to accompany astronauts during experiments [4] - **Scientific Objectives** - The mission aims to verify whether the mice can live normally in space, which is crucial for future studies on space life sciences [3] - Previous experiments included zebrafish, but the introduction of mice is anticipated to yield more dynamic data due to their active nature [6] - **Astronaut Experience** - Astronaut Zhang Hongzhang expressed that having living creatures in space adds a unique dimension to their experience, enhancing the psychological well-being of the crew [8]