Astronaut reports strange sounds coming from troubled Starliner. Here's NASA's explanation

A mysterious, pulsating sound heard by one of two stuck-in-space astronauts coming from Boeing's troubled Starliner has been identified.

A mysterious, pulsating sound heard by one of two stuck-in-space astronauts coming from Boeing's troubled Starliner has been identified.

Butch Wilmore is one of two NASA astronauts whose return to Earth is delayed due to Starliner's technical difficulties.

Wilmore recently heard a strange noise from a speaker in Starliner while stuck aboard the International Space Station, NASA wrote on X on Monday.

"The speaker feedback Wilmore reported has no technical impact to the crew, Starliner, or station operations, including Starliner’s uncrewed undocking from the station no earlier than Friday, Sept. 6," the space agency wrote.

NASA attributed the noise to an "audio configuration between the space station and Starliner."

"The space station audio system is complex, allowing multiple spacecraft and modules to be interconnected, and it is common to experience noise and feedback," NASA wrote.

On Sunday, retired Canadian astronaut Chris Hadfield raised concerns about the noise.