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Showing 1–4 of 4 results
Advanced filters: Author: J.-Y. Chaufray Clear advanced filters

  • The MAVEN spacecraft observed brightening in the Lyman-α line correlated with solar wind activity, which can be attributed to auroral activity by solar wind protons interacting with the Martian neutral hydrogen corona. Proton aurorae are normally seen at Earth only.

    • J. Deighan
    • S. K. Jain
    • B. M. Jakosky
    Research
    Nature Astronomy
    Volume: 2, P: 802-807

  • An updated rotation period of Uranus of 17.247864 ± 0.000010 h is derived from long-term Hubble Space Telescope images of its ultraviolet aurorae. The high accuracy of this value yields a new system III longitude model with improved long-term validity that could be used in planning future Uranus missions.

    • L. Lamy
    • R. Prangé
    • H. Melin
    Research
    Nature Astronomy
    Volume: 9, P: 658-665

  • Multi-spacecraft observations of temperature, dust and water ice opacities, water vapour abundances, and thermospheric hydrogen in the atmosphere of Mars during a local dust storm show that even such regional events, much more frequent than global dust storms, can boost global atmospheric escape by a factor of five to ten.

    • M. S. Chaffin
    • D. M. Kass
    • O. I. Korablev
    Research
    Nature Astronomy
    Volume: 5, P: 1036-1042

  • Venus' mesosphere is a transition region between the retrograde super rotation at the top of the thick clouds and the solar-antisolar circulation in the thermosphere. The mesospheric distributions of HF, HCl, H2O and HDO are reported, and an unexpected extensive layer of warm air at altitudes 90–120 km on the nightside is found.

    • Jean-Loup Bertaux
    • Ann-Carine Vandaele
    • B. Sandel
    Research
    Nature
    Volume: 450, P: 646-649