Plot: Chris Lintott and Maggie Aderin-Pocock report on the Rosetta spacecraft as it prepares to crash into the surface of comet 67P Churyumov-Gerasimenko. This month the Sky at Night goes behind the scenes at the European Space Agency as the Rosetta mission reaches its dramatic conclusion and the spacecraft is crashed into the surface of comet 67P Churyumov-Gerasimenko