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细心的读者可能会发现,我国航天员返回地面后,一般都是由工作人员把他们从返回舱中抬出来。不少人会有疑问:为什么身体如此强壮的航天员还需要被人抬出来呢?这要从他们的身体变化说起,众所周知,人类是一种生活在地球表面、在地球重力(引力加速度在9.8米/秒2左右)影响下的动物。重力对人体的演化和结构有着极大的影响,它的巨大变化会给人类带来普通人无法想象的冲击。在航天任务中,主要有
Careful readers may find that as soon as our astronauts return to the ground, they are generally carried by staff from the return capsule. Many people will have questions as to why the so-strong astronauts still need to be carried out. From the perspective of their physical changes, it is known to all that human beings live on the Earth’s surface in the earth’s gravity (gravitational acceleration at 9.8 m / s 2 or so) under the influence of animals. Gravity has a tremendous impact on the evolution and structure of the human body, and its enormous changes will bring human beings an unimaginable impact. In space missions, there are mainly