A spacecraft window assembly for providing external viewing from inside an inflatable module is claimed. The inflatable shell has a plurality of layers and each layer has a window opening. The spacecraft window assembly comprises a body, a window assembly window opening, and at least one pressure pane disposed within, and forming a substantially airtight seal with, the window assembly. The body of the window assembly is adapted for securedly receiving each one of the plurality of layers of the inflatable shell to the body of the window assembly such that the window opening in each layer of the inflatable shell is substantially aligned with the pressure pane. Further, the body of the window assembly is adapted to form a substantially air tight seal with at least one layer of the inflatable shell.