Abundant molecular oxygen in the coma of comet 67P/Churyumov-Gerasimenko.
Bieler A, Altwegg K, Balsiger H, Bar-Nun A, Berthelier JJ, Bochsler P, Briois C, Calmonte U, Combi M, De Keyser J, van Dishoeck EF, Fiethe B, Fuselier SA, Gasc S, Gombosi TI, Hansen KC, Hässig M, Jäckel A, Kopp E, Korth A, Le Roy L, Mall U, Maggiolo R, Marty B, Mousis O, Owen T, Rème H, Rubin M, Sémon T, Tzou CY, Waite JH, Walsh C, Wurz P. Abundant molecular oxygen in the coma of comet 67P/Churyumov-Gerasimenko. Nature. 2015 Oct 29; 526(7575):678-81.