Smaller Russian modules such as Pirs and Poisk were delivered by modified Progress spacecraft, and the larger modules; Zvezda, Zarya, and Nauka, were launched by Proton rockets. Source: Internet
Prior to the arrival of the Nauka module, a Progress spacecraft will remove Pirs from the station, deorbiting it to reenter over the Pacific Ocean. Source: Internet
A second computer which performs the same functions will be installed in the Nauka module, FGB-2. Source: Internet
Moskva: Nauka, 2004 (a classic general description). Source: Internet
Nauka contains an additional set of life support systems and attitude control. Source: Internet
Nauka has its own engines. Source: Internet