La notte fra domenica e lunedì è stata quella dell'unica "superluna" visibile nel cielo nel 2017: il satellite della Terra è apparso del 7% più grande e del 16% più luminoso del solito perché si trovava al perigeo, il punto più vicino al nostro pianeta lungo la sua orbita ellittica, a una distanza di 357'495 chilometri. Le altre volte che vi era transitato quest'anno si trattava di lune nuove e non piene, per cui il fenomeno non poteva essere notato a occhio nudo.
pon/ansa
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