Thermal management of nanodevices requires a solid understanding of radiative heat transfer in reduced dimensions. To date, experiments involving radiative heat transfer have been limited by a focus on two-body systems. This CAREER program will explore the potential of systems containing more than two objects (i.e., multi-body systems) to lead to new physical and transport behaviors and, as a result, enable new applications in domains of national importance such as aerospace electronics, energy conversion technology, and information processing. To create these new technologies, it is essential to experimentally study and understand nanoscale radiative heat transfer between multiple objects and explore its use for improving heat exchange and thermal control. Thus, a primary outcome of this research will be a novel technique that enables the study of nanoscale radiative heat transfer among multiple objects. In addition to providing the fundamental knowledge necessary to advance thermal control at the nanoscale, this program will implement an innovative educational platform that promotes practical workforce development in academia by bridging the gap between academic work and industrial problems and stimulates curiosity among K-12 students in exploring engineering careers. This CAREER program will apply the physics of radiative transport in multi-bodies to solve thermal control problems in nanodevices. Specifically, this research will experimentally uncover the governing phy