On the 20th of local time, NASA announced on its blog that the level of air leakage on the international space station has increased, three astronauts in the station will temporarily enter the Russian division to evade, while ground controllers are stepping up to confirm solutions. NASA said the U.S. and Russian space agencies are “developing plans to isolate, identify, and repair the source of the leak” and that the current level of leakage is still within the standard range and “will not pose a risk to astronauts or the space station,” according to the US “business insider” website. Russian satellite news agency quoted sources as saying that the source of the leak may be in the U.S. division of the space station. The Russian news agency also said that in order to determine the problem, the astronauts and ground control plan to close all cabin doors and continuously monitor the cabin pressure. The preliminary investigation report is expected to be completed by the end of next week and will be able to determine the location of the leak, NASA said. One American astronaut and two Russian astronauts from the space station will spend the weekend in the “Star” service module of the Russian division. The Soyuz spacecraft, which can carry three people back to earth, is docking in a small laboratory near the service module. < p > < p > < p > “business insider” said that the “Star” service module, launched nearly 20 years ago, is the first habitable module of the international space station, so there will be enough space for three astronauts in the module. It is understood that the last time the international space station reported an air leak was in 2018. At that time, a drill hole appeared in the bulkhead of the Soyuz spacecraft. Russian astronauts checked the space station through the space walk and found the source of the leak and repaired it with epoxy resin.