Launched atop a Proton rocket from the Baikonur Cosmodrome in Kazakhstan on July 12, 2000, the Zvezda Service Module served as the early cornerstone for the first human habitation of the International Space Station. The module provides station living quarters, life support systems, electrical power distribution, data processing systems, flight control systems and propulsion systems. It also provides a communications system that includes remote command capabilities from ground flight controllers, and a docking port for Russian Soyuz and Progress spacecraft and the European Automated Transfer Vehicle. This beautiful #tbt photo is of a portion of a solar array on the Zvezda Service Module taken through a window during Expedition 35 by astronaut Chris Hadfield. Credit: NASA/Chris Hadfield | 2013 #nasa #history #spacestation #habitation #servicemodule #exploration #astronaut #sun #photography