ISS astronauts open hatch to Russian spacecraft after strange smell delays cargo delivery
The hatch between the Russian side and U.S. side of the ISS is usually closed these days. For the past five years, there has been an ongoing air leak on the Russian side. NASA and its Russian counterpart, Roscosmos, continue to troubleshoot the leak, which poses no immediate risk to the ISS astronauts or station operations, NASA has stressed.