Roscosmos - Soyuz - Progress MS-25 - LS 31/6 - Baikonur, KAZ - December 1, 2023

The Progress (Russian: Прогресс) is a Russian expendable cargo spacecraft. Its purpose is to deliver the supplies needed to sustain a human presence in orbit. While it does not carry a crew, astronauts can board it when docked to a space station; it is classified as crewed by its manufacturer. Progress is derived from the crewed Soyuz spacecraft and launches on the exact vehicle, a Soyuz rocket. Progress has supported space stations as early as Salyut 6 and recently as the International Space Station (ISS). Each year, there are three and four Progress flights to the ISS. A Progress remains docked until shortly before being replaced with a new one or a Soyuz (which will use the same docking port). Then, it is filled with waste, disconnected, and de-orbited, which burns up in the atmosphere. Due to the variation in Progress vehicles flown to the ISS, NASA uses its own terminology where “ISS 1P“ means the first Progress spacecraft to ISS. Progress was developed because of the need for co