In 2007 it was decided that, due to the continuing budget problems, the last Research Module was to be cancelled as well.
The MRM1 Rassvet implements the Docking and Stowage Module of the original design and is based on the canceled Science Power Platform pressurised compartment.
Rassvet was launched in 2010 by STS-132 on board the Space Shuttle Atlantis by NASA.
MRM2 is one of the names for the original Docking Compartment 2 module Poisk, that was canceled, but later scheduled again for 2009 launch by Progress M-MIM2.
RKK Energia, the manufacturer of the ROS components, proposes to execute a similar plan to the original ISS proposal with the addition of the nodal module Prichal in 2021 and two additional science/energy modules to the segment around the mid-2020s, though it has decided as of April 2022[update] to launch the modules as their own space station.