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 ...

However, during his journey through space, Yang detected something utterly inexplicable: a distinct 'knocking' sound repeating itself continuously. He examined the capsule thoroughly, gazed through ...

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 ...

Though sound shouldn't be able to travel through space, a Chinese astronaut insists on what he heard.