A Soviet space probe launched in the 1970s on a failed mission to Venus is expected to land back on Earth as early as this weekend. It's unclear where.

Part of a Soviet-era spacecraft is expected to crash back to Earth this week after being stuck in orbit for more than half a century. Kosmos 482 was launched in 1972 as part of a mission to Venus but it never escaped low Earth orbit and separated into four pieces, according to Nasa.