The Salyut 6 space station fell out of space and safely burned up in Earth’s atmosphere along the way on July 29th, 1982. This was the eighth space station the Soviet Union had built for its Salyut program.
The space station spent about five years in orbit and supported five different crewed cosmonaut missions.
Astronomical observations and studies conducted on the space station were meant to understand the effects of spaceflight on the human body. Even as at 1982, the Salyut 6 was still considered fully functional, but a mold problem in the crew quarters led the Soviets to abandon the space lab.
They then intentionally made it re-enter Earth’s atmosphere where it burned before hitting the ground.