Discovery of an aurora on Mars

@article{Bertaux2005DiscoveryOA,
  title={Discovery of an aurora on Mars},
  author={J L Bertaux and François Leblanc and Olivier G. Witasse and Eric Qu{\'e}merais and Jean Lilensten and S. Alan Stern and B. R. Sandel and Oleg I. Korablev},
  journal={Nature},
  year={2005},
  volume={435},
  pages={790-794}
}
In the high-latitude regions of Earth, aurorae are the often-spectacular visual manifestation of the interaction between electrically charged particles (electrons, protons or ions) with the neutral upper atmosphere, as they precipitate along magnetic field lines. More generally, auroral emissions in planetary atmospheres “are those that result from the impact of particles other than photoelectrons” (ref. 1). Auroral activity has been found on all four giant planets possessing a magnetic field… 

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