Uploaded May 2023 | Updated September 2026, 1 week ago
Back in 2003, when astronaut Yang Liwei, was in his space shuttle, he heard a knock from the outside. He describes it as someone knocking the body of the spacecraft, just like knocking an iron bucket with a wooden hammer. This went on for hours. Once back on Earth, various causes were analyzed, but 20 years on, no explanation has been found. And he is not alone, between 2005 and 2008, other Chinese astronauts also reported hearing similar sounds.
Back in 2003, when astronaut Yang Liwei, was in his space shuttle, he heard a knock from the outside. He describes it as someone knocking the body of the spacecraft, just like knocking an iron bucket with a wooden hammer. This went on for hours. Once back on Earth, various causes were analyzed, but 20 years on, no explanation has been found. And he is not alone, between 2005 and 2008, other Chinese astronauts also reported hearing similar sounds.
