On 15 September the Rosetta mission will announce the primary and back up landing sites for comet 67P/Churyumov-Gerasimenko.

This video reviews the five shortlisted landing sites, why they were selected and how the comet’s unusual ‘duck’ shape affected the choice.

The Rosetta orbiter has been studying the comet since May and choosing the right place to land is crucial in order to examine the comet further. The orbiter’s data – together with that from the Philae lander – will provide unprecedented insights into our solar system.

The film also covers the preparation by scientists, members of the mission control team at the European Space Operations Centre at Darmstadt, in Germany, and the challenges ahead.