Di: gmg
Un mare di dune arancioni scolpite dai fortissimi venti che circondano il polo nord di Marte, di un blu corallo.
Questo non è il vero colore del pianeta – i nostri occhi infatti non vedrebbero nessun blu- ma è quello che percepiscono le telecamere termiche della sonda Odyssey, che associano alle diverse temperature del pianeta dei colori.
Alle dune arancioni e gialle corrispondono temperature più elevate, le zone blu invece sfiorano i meno 125 gradi centigradi.
Da 20 anni la sonda Odyssey orbita il pianeta, filtrando ed esaminando le radiazioni che lo circondano per due principali motivi. Individuare acqua o ghiaccio e capire a quali condizioni saranno sottoposti i futuri astronauti che arriveranno su Marte.
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