A Chinese astronaut has reported hearing a strange “knocking” sound in space – and no one is quite sure what it is. The rest of this article is behind a paywall. Please sign in or subscribe to access ...

In space, no one can hear you scream -- but you may hear a knock. When he was alone in a spacecraft in 2003, astronaut Yang Liwei reportedly heard a "knock" despite being alone. Liwei was the first ...

The mysterious knocking sounds heard beneath the Atlantic Ocean that gave false hope that the Titan submersible and its occupants could be rescued has been revealed in a haunting new audio clip. After ...

A new clip from Channel 5’s upcoming documentary "The Titan Sub Disaster: Minute by Minute” includes audio of the eerie “knocking” sound rescuers heard in their search for the Titanic exploration ...

Yang Liwei, China's first astronaut, has revealed that he heard a mysterious knock while alone in a tiny spacecraft during his maiden flight in space. In an interview, Yang said that he recalled ...

I've got a 6 year old JBL 10" subwoofer (home theater sub, not a sub for a car) that has suddenly taken to making a constant rhythmic knocking sound, even when not in use by the receiver. The sound is ...