Space station, also known as space station and space station, is a manned spacecraft that runs in low-earth orbit for a long time and can be used by many astronauts for long-term visit, work and life.

space station

Space stations are divided into single-module space stations and multi-module space stations. Single-module space station is launched into orbit by spacecraft at one time, while multi-module space station is assembled by spacecraft sending each module into orbit in batches. Neither space station has the ability to return to Earth.

1. Space station is characterized by its relatively large volume, complex structure, long on-orbit flight time, multiple functions and wide range of space scientific research projects.

2. One of the characteristics of space station is economy. Because all space stations do not have the function of returning to the ground, it is to accept astronauts to carry out experiments in space, which can make manned spacecraft a tool for transporting astronauts only, thus simplifying the structure of space stations and reducing the difficulty of engineering design and the cost of space flight.

Reference: Baidu Encyclopedia-Space Station