Leaks are affecting a key part of the International Space Station. NASA and Russia’s space agency, Roscosmos, are not seeing eye to eye about the level of risk.

Officials with NASA are at odds with their counterparts at the Russian space agency Roscosmos over the severity of a leak aboard the International Space Station.

This fall, NASA released photos of astronaut Suni Williams—who is currently living on the International Space Station (ISS)—that triggered an onslaught of tabloid and social media rumors speculating about her health.