The broadcast, made at 18:32 US East Coast time, showed that an emergency had arisen on the ISS.
A voice from mission control strongly recommended that the crew commander immediately don a hypobaric suit, citing concerns about decompression sickness.
Thousands of viewers watching the broadcast were stunned and excited by what they heard. “It is necessary to put him in a spacesuit and provide him with oxygen support as quickly as possible,” was heard from the speakers. At that moment it looked like a scene from an intense science fiction movie.
About an hour later, NASA announced that there was, in fact, no threat.
The transmitted message turned out to be audio from a training simulation that was accidentally broadcast live. The agency’s official statement on Twitter stated that “all ISS crew members are safe and healthy.”
Source: Ferra

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