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Showing 1–5 of 5 results
Advanced filters: Author: J.-J. Lopez-Moreno Clear advanced filters

  • The oxygen emission at 557.7 nm, responsible for the green colour of auroras on Earth, is present in two layers at 80 and 120 km altitude on the dayside atmosphere of Mars. Simultaneous observations of the oxygen both in this visible line and in the ultraviolet could also constrain the elusive visible/ultraviolet intensity ratio of the auroral emission to a value of 16.5.

    • J.-C. Gérard
    • S. Aoki
    • B. Beeckman
    Research
    Nature Astronomy
    Volume: 4, P: 1049-1052

  • 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

  • A bright outburst of activity from the nucleus of comet 67P, observed by Rosetta in July 2015, is traced back to a cliff that partially collapsed at the same time as the outburst, establishing a link between the two events. The collapse has also exposed the fresh ice present under the surface.

    • M. Pajola
    • S. Höfner
    • E. Baratti
    Research
    Nature Astronomy
    Volume: 1, P: 1-8

  • The peculiar object P/2010 A2, discovered in January 2010, is in an asteroidal orbit in the inner main asteroid belt and was given a cometary designation because of the presence of a trail of material. These authors report observations of P/2010 A2 by the Rosetta spacecraft. They conclude that the trail arose from a single event, an asteroid collision that occurred around 10 February 2009.

    • Colin Snodgrass
    • Cecilia Tubiana
    • K.P. Wenzel
    Research
    Nature
    Volume: 467, P: 814-816