Progress M-6
Progress M-6 () was a Soviet uncrewed cargo spacecraft which was launched in 1991 to resupply the Mir space station. The twenty-fourth of sixty four Progress spacecraft to visit Mir, it used the Progress-M 11F615A55 configuration, and had the serial number 205. It carried supplies including food, water and oxygen for the EO-8 crew aboard Mir, as well as equipment for conducting scientific research, and fuel for adjusting the station's orbit and performing manoeuvres. Progress M-6 was launched at 14:50:27 GMT on 14 January 1991, on a Soyuz-U2 carrier rocket flying from Site 1/5 at  the Baikonur Cosmodrome. Following two days of free flight, it docked with the aft port of the "Kvant-1" module of Mir at 16:35:25 GMT on 16 January. During the 58 days for which Progress M-6 was docked with it, Mir was in an orbit of around , inclined at 51.6 degrees. Progress M-6 undocked from Mir at 12:46:41 GMT on 15 March, and was deorbited a few hours later at 17:14:00. It burned up in the atmosphere over the Pacific Ocean at around 18:07:26.