Page 4: Research news on Gravitational interaction

Gravitational interaction as a research area encompasses the theoretical, computational, and experimental study of how mass-energy curves spacetime and governs the dynamics of astrophysical and cosmological systems. It includes general relativity, tests of the equivalence principle, post-Newtonian approximations, and numerical relativity for compact-object binaries and gravitational-wave sources. The field also investigates modifications of gravity, dark matter and dark energy phenomenology from a gravitational perspective, strong- and weak-field regimes, gravitational lensing, and structure formation. Research involves precision experiments, multi-messenger astronomy, and the development of effective field theories and quantum-gravity–motivated models to probe deviations from classical gravitational dynamics.