大众传媒习惯上把航天员称做宇航员,其实,更准确的称谓应为航天员。这是由茫茫宇宙的划分和航天员的定义所决定的。一般而言,人类借助航空航天器在浩翰宇宙空间的飞行活动分为3个层次,即大气内的航行活动叫做航空,在外层空间太阳系以内的航行活动称为航天,把太阳系外的航天活动称为航宇。 The mass media habitually call astronauts astronauts, in fact, a more accurate title should be astronauts. This is determined by the division of the vast universe and the definition of astronaut. Generally speaking, human beings are divided into three levels by means of the spacecraft’s flying activities in the vast universe: the air navigation in the atmosphere is called aviation; the navigation activities in the solar system in outer space are called aerospace; and the space activities outside the solar system Known as aerospace.