Changes can be in gravitational attraction.Logical formLearned from3 sentences. A background can be gravitational.Logical formLearned from3 sentences. A trap can be gravitational.Logical formLearned from3 sentences. An aggregate can be gravitational.Logical formLearned from3 sentences. A gravitational interaction can be between galaxies.Logical formLearned from3 sentences. A change can be in gravitational force.Logical formLearned from3 sentences. A gravitational collapse of a star may be prevented by (radiation pressure).Logical formLearned from3 sentences. An emission can be gravitational.Logical formLearned from3 sentences. A gravitational field can be symmetric.Logical formLearned from3 sentences. Gravitational waves may undergo measurements.Logical formLearned from3 sentences. A gravitational field may be produced.Logical formLearned from3 sentences. A direction can be gravitational.Logical formLearned from3 sentences. An intensity can be gravitational.Logical formLearned from3 sentences. A gravitational force can be between masses.Logical formLearned from3 sentences. Gravitational interactions can be with (gas giants).Logical formLearned from3 sentences.