Launched in 1972, Kosmos 482 was intended to land on the surface of Venus, but an engine malfunction left it stranded in Earth orbit. Now, more than 50 years later, it’s expected to come back down to Earth sometime between May 7 and 13.

In 1972, the Soviet Union launched a pair of space probes destined for Venus. While the USSR’s Venera 8 successfully reached its destination, a malfunctioning Soyuz rocket ensured its sibling Kosmos 482 craft never made it past Earth’s orbit.

In 1972, the Soviet Union’s Venera 8 spacecraft became the second ever to land on Venus. It operated for 50 minutes in the planet’s harsh environment before succumbing to the intense heat. But this intrepid lander once had a sister probe named Cosmos 482. It launched four days after Venera 8 but was unable to escape low-Earth orbit and broke apart.