I thought that was going to be far more interesting than it ended up being. The documentary tells us the story of the hugely innovative and ambitious task to send two motorised, solar-powered, rovers to Mars. One called "Spirit", the other the eponymously nick-named "Opportunity". History tells us what happened, but I was was very much hoping for more meat on the bones of this astonishing feat of science and engineering than is delivered in this rather dry, vox-pop style, recounting of the project. It is interspersed with occassional actuality, but there is a real paucity of that as this trund...