{"knowledge_schema": {"broad_category": "Astronomy \u2192 Exoplanets \u2192 Orbital Dynamics", "refinement": "This problem involves understanding the relationship between the mass of exoplanets, their orbital characteristics, and the observed radial velocity shifts due to their gravitational influence on their host stars.", "specific_scope": "The focus is on comparing the orbital periods of two exoplanets based on the periodic shifts in spectral lines observed through the radial velocity method.", "goal": "Determine the ratio of the orbital periods of Planet B to Planet A based on the observed radial velocity shifts."}, "summary": "This problem relates to the study of exoplanets and their orbital dynamics, specifically using the radial velocity method to infer properties of planets based on shifts in spectral lines. The task is to compare the orbital periods of two Neptune-like planets orbiting stars of similar mass, using the observed periodic shifts in their spectral lines. The goal is to calculate how many times longer the orbital period of Planet B is compared to that of Planet A, leading to the conclusion that the answer is 0.36."}