NASA astronauts Sunita Williams and Butch Wilmore have reported unexplained noise aboard Boeing's Starliner, which is docked at the International Space Station (ISS). The noises, described as sonar-ping sounds, add to the existing challenges faced by Boeing and NASA with the Starliner, including issues like helium leaks and thruster malfunctions.

Engineers from both NASA and Boeing have yet to determine the cause of these sounds. The spacecraft had been planned to return to Earth empty, highlighting the complexity and ongoing troubleshooting needed for Boeing's spacecraft program. The mysterious noises and previous technical difficulties underscore the hurdles in ensuring the vehicle's reliability for future crewed missions.