The International Space Station (ISS) is leaking — and major space agencies are divided over what to do about it.
The leak is located in a Russian segment of the station known as a PrK module, which connects Russia's Zvezda service module to the space station's main body. NASA and Russian space agency Roscosmos have known about the leak since at least 2019, but its underlying cause remains a mystery. Since its discovery, cosmonauts have taken various steps to minimize its impact, including sealing off the segment when it is not in use. But Roscosmos and NASA now disagree about the leak's severity.
