Abstract: A series of spacecraft designs (10, 26 & 34) for a Satellite Communication System is disclosed. One of the preferred embodiments of the invention called "Domesat" (10) includes a hemispherical, high-gain, electronically-steered antenna array (12) that is always pointed toward the Earth (E). Hexagonal antenna panels (14) are held together by tubular and spherical connectors (22 & 24). The upper portion of the satellite (10) incorporates a space-facing array (16) of panels (18) which are always pointed toward the zenith (Z). The interior of the dome-shaped antenna array (12) is used to store solar cell panels (20) which unfurl through an opening (11) in the space-facing array (16) when the spacecraft (10) reaches its final orbit. An alternative embodiment of the invention called "Gearsat" (26) comprises a hollow torus which inflates when it reaches orbit. When viewed from the side along its circumference, "Gearsat" (26) looks like two flattened pyramids sharing a common base.