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Showing 1–6 of 6 results
Advanced filters: Author: K. D. Retherford Clear advanced filters

  • 16 out of 17 spectral observations of Europa, spanning from February 2016 to May 2017, did not see anything, but the one on 26 April 2016 shows evidence of a direct detection of water vapour, compatible with a column density of 1.4 ± 0.4 × 1019 H2O m−2. Whatever water activity there is on Europa, it is very sporadic.

    • L. Paganini
    • G. L. Villanueva
    • M. J. Mumma
    Research
    Nature Astronomy
    Volume: 4, P: 266-272

  • The volatile-ice-filled basin informally named Sputnik Planum is central to Pluto’s geological activity; this ice layer is organized into cells or polygons, and it is now shown that convective overturn in a several-kilometre-thick layer of solid nitrogen can explain both the presence of the cells and their great width.

    • William B. McKinnon
    • Francis Nimmo
    • K. E. Smith
    Research
    Nature
    Volume: 534, P: 82-85