Detection of an oxygen atmosphere on Jupiter's moon Europa

@article{Hall1995DetectionOA,
  title={Detection of an oxygen atmosphere on Jupiter's moon Europa},
  author={Doyle T. Hall and Darrell F. Strobel and Paul D. Feldman and Melissa A. McGrath and Heather A. Weaver},
  journal={Nature},
  year={1995},
  volume={373},
  pages={677-679}
}
EUROPA, the second large satellite out from Jupiter, is roughly the size of Earth's Moon, but unlike the Moon, it has water ice on its surface1. There have been suggestions that an oxygen atmosphere should accumulate around such a body, through reactions which break up the water molecules and form molecular hydrogen and oxygen2,3. The lighter H2 molecules would escape from Europa relatively easily, leaving behind an atmosphere rich in oxygen. Here we report the detection of atomic oxygen… 
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Trace constituents of Europa's atmosphere
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