Lost in space Meanwhile, the botched probe that failed to get from Earth to Venus was "renamed" Kosmos-482.

Different computer models were used to predict the reentry of the 1970s-era Soviet Venus craft Kosmos-482. Why were they divergent, and how can we improve our debris-fall forecasts?

The long and troubled history of the would-be Venus spacecraft, known as Kosmos-482, can shed some light on these key questions, scientists say. So, let's have a look.

Researchers say the signal originates from Relay 2, a communication satellite launched in 1964 and ceased functioning in 1967 ...