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 ...

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 ...

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 ...

After the underwater craft lost contact with its mothership on a journey to the Titanic wreck last summer, reports on the second day of the frantic search said that banging noises were reverberating ...

Sound coming from your engine bay is typically very normal, as it means the engine is working and providing power to help move your vehicle. Most drivers have an idea of what their vehicle should ...