was the third module of the ISS. Engineers on both sides agree that air is leaking out of cracks in the vestibule between the Zvezda and the PrK tunnel. The disagreement is why it’s happening.

The ISS is aging. Zvezda and the PrK launched in July 2000 and will mark a quarter-century in orbit next year. NASA wants to ...

With astronauts stranded on the International Space Station for months, you may have forgotten all about the aging space ...

A Russian spacecraft docked to the International Space Station (ISS) didn’t just bring supplies to the ISS—it also brought a ...

For the past five years, air has been escaping through a Russian section of the International Space Station (ISS) at an ...

NASA and Russia at odds over cause and severity of the International Space Station's leak risks, including possibility of ...

With bilateral relations being at their worst since the 1980s and the station’s planned death in sight, persistent air leaks ...

The Russian Zvezda module and its Progress docking ... astronauts close the hatch to the Russian side of the ISS whenever the PrK tunnel is in use. If NASA is proven correct and the leaks escalate ...

and NASA has expressed concerns about the structural integrity of PrK and the possibility of a catastrophic failure." Related: Top 'safety risk' for the ISS is a leak that has been ongoing for 5 ...

The main concern discussed was the air leak in the Zvezda Service Module PrK, which had previously been determined to have 'no immediate impact on crew safety or ISS operations,' but which has ...

The International Space Station (ISS) has been in orbit for decades ... The tiny cracks formed in a tunnel known as PrK that connects Zvezda to the Russian docking module where Progress cargo ...