Juan Bosco Díaz Murillo is a Panamanian electromechanical engineer and independent researcher whose professional career spans more than five decades in power generation, hydroelectric engineering, electromechanical systems, control and energy infrastructure.

He graduated as an Electromechanical Engineer from the University of Panama and later completed twenty-eight graduate credit hours at Northeastern University in Boston, primarily in linear control and power-system stability.

Throughout his professional career, Díaz Murillo has participated in the design, development, construction and commissioning of major energy projects. His experience includes leadership roles in electrical generation and electromechanical design, as well as extensive work in hydroelectric power generation.

Among his major early projects was the La Fortuna Hydroelectric Power Plant, a 300 MW facility in Panama, where he worked in electromechanical design and later as a commissioning engineer. His subsequent career included engineering management, industrial projects, power-generation systems and the development and construction of hydroelectric plants.

From Engineering to Astrophysics

Alongside his engineering career, Díaz Murillo has maintained a long-standing independent interest in fundamental physics and astrophysics.

His engineering background—particularly his experience with energy, physical systems, control, mathematical analysis and the interaction of complex systems—has shaped the analytical approach through which he explores questions concerning gravitation, cosmology and the evolution of the universe.

Working independently rather than through a university or astrophysics research institution, he has developed theoretical proposals addressing fundamental questions about the physical mechanisms governing the universe.

Published Work

In 2025, Díaz Murillo published the paper:

“Variation of the Gravitational Constant and the Mechanism that Makes the Observable Universe to Grow”

Centros: Revista Científica Universitaria, Vol. 14, No. 2, pp. 109–123 (2025).

DOI: 10.48204/j.centros.v14n2.a7610

The paper explores a proposed variation of the gravitational constant over the evolution of the universe and a possible mechanism associated with cosmic expansion. It also develops related hypotheses concerning the relationship between space-time, matter and energy, and discusses alternative interpretations of cosmological redshift and dark matter.

Purpose

Díaz Murillo Astrophysics was created to organize, document and preserve this body of work in a transparent and accessible form.

The purpose of this archive is not to present independent hypotheses as established scientific results. Rather, it provides a public record through which the author’s proposals can be examined, discussed, criticized and compared with established scientific knowledge.