The Progress-18 cargo spacecraft, launched to the ISS in October 2021, will undock from the International Space Station’s Zvezda service module on June 1. After that, the “truck” will be sunk in a nonnavigable area of the Pacific Ocean. To replace it to the ISS will be sent Progress MS-20, the launch and docking scheduled for June 3.
Progress MS spacecraft are used to deliver cargoes (scientific equipment, water, oxygen, etc.) to the International Space Station, as well as to adjust its orbit. For example, the engines of Progress MS-18 have been used eight times to correct the orbit of the ISS, most recently yesterday, when a space debris evasion maneuver was used.