"The Russian members of the ISS-65 expedition Oleg Novitsky and Pyotr Dubrov opened the hatch of the transition compartment of the Zvezda module and a few minutes later entered the living area of ​​the instrument-hermetic compartment of the laboratory module," Roscosmos said in a statement.

It is noted that on board the module, the cosmonauts will conduct a control inspection of the compartments, take air samples and install an atmosphere purification filter unit.

Earlier, Vladimir Solovyov, the head of the flight of the ISS Russian segment, said that the reason for the abnormal activation of the engines of the Nauka module was a short-term software failure.