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Plutone ha anche dune, come la Terra, Marte e Venere e non solo montagne di ghiaccio alte fino a 3'500 metri. Le sue però non sono fatte di sabbia, ma di granelli di metano solido.
Lo dimostra l'analisi, pubblicata sulla rivista Science, degli ultimi dati della sonda Nasa New Horizons, raccolti il 14 luglio 2015 durante il suo sorvolo su Plutone a distanza ravvicinata.
Coordinato da Matt Telfer, il gruppo di planetologi e fisici dell'Università britannica di Plymouth, dell'Università tedesca di Colonia e dell'Università americana Brigham Young ha individuato, grazie alle immagini di New Horizons del 2015 e a modelli realizzati al computer, 357 dune in una regione di Plutone denominata Sputnik Planitia.
ATS/sdr
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