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Un asteroide ha "sfiorato" la Terra all'alba di oggi (lunedì): alle 5.51 (ora svizzera) è passato a 70'000 chilometri dal nostro pianeta, pari a poco meno di un quinto della distanza media che ci separa della Luna. "Una distanza di tutta sicurezza", ha dichiarato l'astrofisico Gianluca Masi, responsabile del Virtual Telescope, che ha osservato l'evento.
L'asteroide, indicato con la sigla 2017 BH30, ha un diametro compreso fra 5 e 10 metri ed era stato scoperto poche ore prima del passaggio ravvicinato dal programma di ricerca Catalina Sky Survey, che fa capo all'università dell'Arizona.
ANSA/M. Angeli
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