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Gli astronauti della NASA Christina Koch e Andrew Morgan hanno compiuto la prima di cinque passeggiate spaziali destinate alla manutenzione della Stazione Spaziale Internazionale (ISS). Il duo ha lavorato nello spazio per sette ore e un minuto per aggiornare i sistemi di alimentazione della stazione.
Gli astronauti hanno installato delle nuove batterie agli ioni di litio sulla sua intelaiatura, più piccole e potenti dei vecchi esemplari al nichel-idrogeno. I lavori di sostituzione continueranno durante il mese di ottobre.
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