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Momenti d'allarme sulla Stazione spaziale internazionale (ISS), venerdì, dopo la scoperta di una bolla d'acqua nel casco di un cosmonauta impegnato in una escursione in orbita.
L'astronauta, lo statunitense Tim Kopra, aveva infatti segnalato la presenza di una bolla di circa 10 centimetri per 5, circa quattro ore dopo l'inizio della sua uscita nello spazio insieme al collega britannico Tim Peake. La passeggiata spaziale è stata quindi interrotta. Kopra, come ha precisato la NASA, non corre alcun pericolo.
Tim Kopra, qui ripreso all'interno della Stazione Spaziale Internazionale, in un'immagine del 2009
La bolla d'acqua potrebbe essersi sviluppata a seguito di un guasto nel sistema di raffreddamento della tuta spaziale. I due, prima del forzato rientro, sono comunque riusciti a portare a termine il compito legato all'escursione, ossia la sostituzione di un regolatore di tensione risultato difettoso.
Red.MM/ARi
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