A year ago, the Rosetta Mission landed a probe on a comet - the first time this feat had been achieved.
Rosetta has since revealed a whole load of fascinating facts about Comet 67P/Churyumov–Gerasimenko.
Here are three things we’ve discovered about the comet so far, as well as three mysteries we have yet to solve…
Read the story: Historic Rosetta mission to end with crash into comet
Find out more about the Rosetta Mission: ESA Rosetta