Progress spacecraft

Current status

Progress spacecraft are used to resupply the International Space Station (ISS) as of 2021. Between 1 February 2003 and 26 July 2005, they were the only spacecraft available to transport large quantities of supplies to the station, as the Space Shuttle fleet was grounded after the breakup of Columbia at the end of STS-107. For ISS missions, the Progress M1 variant is used, which moves the water tanks from the propellant and refueling module to the pressurized section, and as a result is able to carry more propellant. Progress M-UM, the final flight of a Progress-M spacecraft, was launched 24 November 2021 on a Soyuz 2.1b. As of 7/1/2021, there have been 170 Progress flights to the ISS.