A spacewalk to work on the International Space Station ended abruptly on Tuesday when a water-like liquid started building up inside an Italian astronaut's helmet, NASA officials said.
U.S. astronaut Chris Cassidy and Italy's Luca Parmitano were less than an hour into a planned six-hour outing when Parmitano reported what seemed to be water inside his helmet.
"My head is really wet and I have a feeling it's increasing," Parmitano radioed to flight controllers in Houston. Thinking it might be his drinking water reserve, he drained the container. However, the liquid continued to build up, eventually getting into his eyes and nostrils. Concerned for his safety, the six-hour assignment was called off and the men returned to the station.
Engineers are looking into whether the leak originated in the astronaut’s liquid-cooled undergarment.They estimate that between a litre and a litre-and-a-half of the liquid escaped into the suit.