Prichal nodal module also known as Uzlovoy Module or UM is a Russian spacecraft which is part of the International Space Station (ISS). It was approved in 2011 and was launched on 24 November 2021, at 13:06:35 UTC, atop Progress M-UM, with operations beginning in 2022. Originally, the nodal module was intended to serve as the only permanent element of the future Orbital Piloted Assembly and Experiment Complex (OPSEK), but those plans were scrapped in 2017.

The International Space Station (ISS) is a large space station assembled and maintained in low Earth orbit by a collaboration of five space agencies and their contractors: NASA, Roscosmos (Russia), JAXA (Japan), ESA (Europe), and CSA (Canada). The ISS is the largest space station ever built. Its primary purpose is to perform microgravity and space environment experiments.