Sunlight refraction in the mesosphere of Venus during the transit on June 8th, 2004

@article{Tanga2012SunlightRI,
  title={Sunlight refraction in the mesosphere of Venus during the transit on June 8th, 2004},
  author={P. Tanga and T. Widemann and B. Sicardy and J. Pasachoff and J. Arnaud and L. Comolli and A. Rondi and S. Rondi and P. Suetterlin},
  journal={Icarus},
  year={2012},
  volume={218},
  pages={207-219}
}
Abstract Many observers in the past gave detailed descriptions of the telescopic aspect of Venus during its extremely rare transits across the Solar disk. In particular, at the ingress and egress, the portion of the planet’s disk outside the Solar photosphere has been repeatedly perceived as outlined by a thin, bright arc (“aureole”). Those historical visual observations allowed inferring the existence of Venus’ atmosphere, the bright arc being correctly ascribed to the refraction of light by… Expand
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