Don S. Montgomery
Name: Salyut 7/Kosmos 1686
Reentry Date: February 7, 1991
Reentry Location: CapitÃ¡n BermÃºdez, Argentina
Size: 40 metric tons
Type: Large, uncontrolled reentry
The Soviet space station had been uninhabited for almost 5 years when it returned to Earth, along with the unmanned spacecraft Kosmos 1686, showering a small Argentinian town with debris.