从第一个航天员加加林上天到现在,世界载人航天的发展基本上是沿着载人飞船、试验性空间站、实用型空间站、航天飞机和长久性空间站的道路前进的。其中载人飞船和航天飞机是天地往返的运输器,主要用于为在太空长期运行的试验性空间站、实用型空间站和长久性空间站提供各种运输服务;试验性空间站主要用于试验实用型空间站和长久性空间站的有 From the very first astronaut Gagarin to the present day, the development of manned spacecraft in the world basically follows the path of manned spacecraft, experimental space station, practical space station, space shuttle and long-range space station. Among them, manned spacecraft and shuttle are round-the-world transporters and are mainly used for providing various transportation services for experimental space stations, utility space stations and long-standing space stations that are in long-term operation in space. Experimental space stations are mainly used for testing practical space stations And there is space station