Una staffetta di piccoli asteroidi sta passando molto vicino alla Terra, a una distanza inferiore rispetto a quella che separa il nostro pianeta dalla Luna, ma comunque di tutta sicurezza: dal 12 ottobre a oggi almeno uno di questi piccoli corpi celesti ha salutato la Terra, un altro è in arrivo questa sera e altri due sono attesi all'alba del 21 ottobre.
"Questa apparente concentrazione di transiti a distanza ravvicinata non è indicativa di un pericolo o di un bizzarro comportamento da parte degli asteroidi, ma è del tutto casuale", ha detto l'astrofisico Gianluca Masi, responsabile scientifico del Virtual Telescope. Tutti i passaggi previsti in questi giorni, ha precisato Masi, "avverranno in assoluta sicurezza: non è la distanza ravvicinata a rappresentare il pericolo in sé quanto il fatto di avere certezza che la distanza sia quella e in questi casi tale certezza l'abbiamo".
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