Support WBURIn Quest To Harpoon A Comet, A Spacecraft Stalks Its PreyPlay03:35Download AudioGeoff BrumfielAugust 05, 2014 ShareThe Rosetta spacecraft took this image of comet 67P/Churyumov-Gerasimenko on 4 August 2014 from a distance of just 145 miles. (ESA/Rosetta/NAVCAM)