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Un gruppo internazionale di astronomi, a cui ha collaborato anche l'Università di Ginevra, ha scoperto un esopianeta tre volte più grande della Terra. GI411b, questo il suo nome, è il terzo più vicino alla nostro sistema solare e orbita attorno alla stella GI411 a una distanza di otto anni luce da noi, nella costellazione dell'Orsa Maggiore.
La ricerca di una seconda Terra: l'intervista a Didier Queloz, scopritore nel 1995 del primo esopianeta
Swissinfo/Michele Andina 22.01.2019, 11:38
"La sua vicinanza e la sua luminosità ne fanno un obiettivo ideale per i futuri telescopi giganti come l'ELT europeo, che dovrebbe permetterci di analizzare la sua atmosfera", ha commentato Rodrigo Diaz, autore principale dello studio.
Il team di ricercatori ha utilizzato lo spettrografo SOPHIE, sviluppato in parte dall'ateneo romando. Questo strumento è installato sul telescopio da 193 centimetri dell'Osservatorio dell'Alta Provenza, ovvero lo stesso che ha permesso a Michel Mayor e Didier Queloz di scoprire il primo pianeta extrasolare nel 1995.
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