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.

Some of the main modules of the International Space Station are nearly a quarter-century old. "That's considered classic for a car," said Bennett Maruca, an astronomer and physicist at the University of Delaware.

NASA has concerns about the structural integrity of the Russian module and the "possibility of a catastrophic failure," per ISS Advisory Committee chair Bob Cabana