神舟十二号凯旋归来，3名宇航员返回地球后，为何也要进行隔离3

After the successful return of Shenzhou XII, astronauts undergo a 3-day quarantine to prevent the spread of potential unknown bacteria from space, where unique conditions like high-energy radiation and vacuum can cause genetic mutations. This is crucial for ensuring their health and safety, as well as the continuation of scientific advancements in space exploration.