18a are appropriately coupled and actuated by control logic 19 to distend or inflate the balloons in space only a very small amount of gas is required the transparent portion 16a permits passage of incoming sunlight reflector layer 16b being deposited or otherwise coated on the inner surface of the collector balloon reflects and concentrates the sunlight toward a lens reflector or mirror unit 21 the lens reflector mirror unit collimates the reflected concentrated light and aims it through a transparent window 22 provided in the collector balloon wall and onto a flat reflecting mirror 24 the flat reflecting mirror can double as a sunlight modulator the details of which will be discussed below the modulated light is fed through a transparent window 25 provided in director balloon 17 and to another lens reflector mirror unit 27 in this instance the lens reflector unit receives collimated light from the modulator and disperses it on a reflective layer 17b the reflective layer directs the modulated sunlight through transparent wall 17a and toward its designated area on earth the collector and director balloons are shown as being the same size however their relative sizes can differ and the relative sizes of the reflective layers can vary to change the signals as the situations demand modulation of the concentrated sunlight by the flat mirror can proceed in a number of ways the flat mirror could include a matrix array of light transmissive varying elements such as rows and columns of liquid crystal elements laminated over the reflecting surface an electro optical modulator or a mechanical shutter device working like a heliograph for imparting interruptions or variations of the transmitted intensity of the concentrated sunlight or an electro mechanical device for changing the curvature of 21 or 27 these interruptions.