It’s almost impossible to imagine the fear and confusion that must have gripped Yang Liwei, miles above the Earth, more isolated than most humans will ever find themselves. But it wasn’t the vastness of space or the loneliness of his situation that concerned him. It was something much, much stranger.
Yang was in space for the first time – the only man in a small capsule orbiting the Earth. And then something truly bizarre happened – something that the confused astronaut hadn’t spoken about publicly since he came back from his 2003 space flight. But now he’s broken that silence.
In fact, it was a break in the silence that left Yang so worried. Because during his 21-hour mission outside of Earth’s atmosphere, he heard something that he shouldn’t have. Something that would spook you even if you weren’t in the depths of space. What he heard was a knocking on the side of his space capsule.