To line up with ESA astronaut Matthias Maurer and members of his 66th expedition to experience the orbit of the international space station (ISS) from the inside. The speed of the following video is actually 8 times that of real-time. It is understood that the International Space Station flies around the earth at an altitude of about 400 kilometers.
It needs periodic re pressurization to maintain its orbit and overcome the influence of atmospheric resistance caused by atmospheric molecules, which will cause the space station to lose about 100 meters of height every day.
In addition, the orbital re pressurization maneuver of the space station also optimizes the phase of future access spacecraft to the space station. In March 2022, the international space station used Russia's ISS progress 79 cargo spacecraft for an orbital re lift. By igniting its engine for a few minutes, the space station was placed at an appropriate height for the orbital rendezvous and landing of the crew ship.
During the maneuver, the astronauts in the space station have been flying at the same speed and direction. Although it seems that astronauts are moving in the space station, it is actually the international space station that is being pushed and moving around them.