For all of us who were amazed at the results of the just concluded Rosetta comet mission, it is very sad to hear that Klim Churyumov, co-discoverer in 1969 of Comet 67/Churyumov-Gerasimenko, died this weekend. It was wonderful that he could live to see his comet close up thanks to the amazing Rosetta mission which just ended in spectacular fashion with both the Rosetta and Philae spacecraft now resting on ‘his’ comet’s surface. (Photo: Klim Churyumov at the International Planetarium Society 2016 conference in Warsaw in late June this year with myself on right and Martin George of Launceston Planetarium.) — Mark Rigby