A gravitationally bound system has a lower (i.e., more negative) gravitational potential energy than the sum of its parts—this is what keeps the system aggregated in accordance with the minimum total potential energy principle.
Et gravitationelt bundet system har en lavere (fx, mere negativ) gravitationspotential energi, end summen af dets dele - det er hvad som holder systemet bundet (aggregeret) i overensstemmelse med princippet om minimum total potential energi.