Saturno ha 20 nuove lune. Con questa scoperta, verificata dal Minor Planet Center dell'Unione Astronomica Internazionale, il pianeta ha complessivamente 82 lune e supera il precedente record del sistema solare detenuto da Giove con 79.
Il risultato si deve ai ricercatori guidati da Scott Sheppard, della Carnegie Institution for Science, a Washington, che ha indetto un concorso online per dare un nome ai nuovi satelliti naturali di Saturno.
Le nuove lune hanno tutte il diametro di circa cinque chilometri, diciassette di esse orbitano in senso opposto rispetto alla rotazione del pianeta sul proprio asse, ossia hanno un'orbita retrograda, e una di esse è la luna più lontana mai vista intorno a Saturno. Le altre tre nuove lune orbitano nella stessa direzione del gigante gassoso.
La scoperta è stata possibile grazie al telescopio Subaru dell'Osservatorio di Mauna Kea alle Hawaii.
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