Abundant molecular oxygen in the coma of comet 67P/Churyumov–Gerasimenko

@article{Bieler2015AbundantMO,
  title={Abundant molecular oxygen in the coma of comet 67P/Churyumov–Gerasimenko},
  author={A. Bieler and K. Altwegg and H. Balsiger and A. Bar-Nun and J. Berthelier and P. Bochsler and C. Briois and U. Calmonte and M. Combi and J. Keyser and E. V. Dishoeck and B. Fiethe and S. Fuselier and S. Gasc and T. Gombosi and K. Hansen and M. H{\"a}ssig and A. J{\"a}ckel and E. Kopp and A. Korth and L. L. Roy and U. Mall and R. Maggiolo and B. Marty and O. Mousis and T. Owen and H. R{\`e}me and M. Rubin and T. Semon and C. Tzou and J. Waite and C. Walsh and P. Wurz},
  journal={Nature},
  year={2015},
  volume={526},
  pages={678-681}
}
The composition of the neutral gas comas of most comets is dominated by H2O, CO and CO2, typically comprising as much as 95 per cent of the total gas density. In addition, cometary comas have been found to contain a rich array of other molecules, including sulfuric compounds and complex hydrocarbons. Molecular oxygen (O2), however, despite its detection on other icy bodies such as the moons of Jupiter and Saturn, has remained undetected in cometary comas. Here we report in situ measurement of… Expand
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