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.

NASA worries that a leak aboard the International Space Station could lead to a catastrophic failure if not fixed in time — but not everyone agrees.