Earth-centric satellite systems are increasingly constrained by orbital congestion, collision exposure that scales nonlinearly with constellation size, and geometry-driven power intermittency. This paper proposes Heliocentric Artificial Planets (HAPs): modular, actively controlled heliocentric hubs that deliver persistent solar power, autonomous coordination, and data aggregation for distributed satellite networks. We provide quantified scaling laws, explicit numerical evaluations, and a system-of-systems architecture that together demonstrate physical feasibility within known laws of orbital mechanics and electromagnetic transmission. The concept reframes future space systems from spacecraft-centric to infrastructure-centric design and positions heliocentric placement as a structural solution to Earth-orbit scalability limits.