Mission of the Pole to space halted. The problem is this ISS element

Zdjęcie: Polak nie leci w kosmos. Czym jest pechowy moduł Zwiezda na ISS?


Sławomi Uznański-Wiśniewski and the another members of the Ax-4 mission were scheduled to fly to ISS on Sunday, but the start was postponed again. NASA declares that it needs more information about the situation of the Zwieda module, which is located on the Russian part of the global Space Station. What is this component of the ISS and what is happening there?