To this day, Progress missions are flown, with more planned for future deliveries to the International Space Station. (Courtesy: NASA/CBS)
It would be the first in a series of unmanned spacecraft from the Soviet Union, and later Russia, to resupply space stations in orbit. The first Progress spacecraft was launched on January 20th, 1978.
This would be Progress 1, and it would travel to the Soviet Salyut 6 space station, docking two days after launch. The unmanned spacecraft was similar in design to the manned Soyuz vessel. Progress 1 carried food, spare parts, scientific equipment and more.
The Progress series would go on to many future flights to Salyut 6, Salyut 7, Mir, and the International Space Station. The configuration would be tweaked throughout the decades, but basically remain the same. To this day, Progress missions are flown, with more planned for future deliveries to the International Space Station.
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