Computer-generated artist's rendering of the International Space Station as of May 23, 2010. STS-132 space shuttle Atlantis undocks leaving the new Rassvet Mini-Research Module 1 (MRM1) on the Zarya nadir port. Soyuz 21 (TMA-17) is docked to the Zvezda Service Module's aft port. Progress 37 resupply vehicle is linked to the Pirs Docking Compartment and Soyuz 22 (TMA-18) remains docked to the Poisk Mini-Research Module 2 (MRM2).