A gravitational lens may undergo observations.Logical formLearned from2 sentences. Tides may be powered by a gravitational pull of the moon.Logical formLearned from2 sentences. A compact object can be with a gravitational field.Logical formLearned from2 sentences. (Lens techniques) can be gravitational.Logical formLearned from2 sentences. Gravitational waves may ripple through a fabric.Logical formLearned from2 sentences. A vibration may produce a gravitational force.Logical formLearned from2 sentences. Gravitational acceleration can be in a direction.Logical formLearned from2 sentences. A gravitational acceleration can be vertical.Logical formLearned from2 sentences. Axis may be caused by a gravitational pull of the sun.Logical formLearned from2 sentences. Gravitational forces may act on the moon.Logical formLearned from2 sentences. Perturbations may be related to gravitational waves.Logical formLearned from2 sentences. Gravitational waves can be in a (boundary layer).Logical formLearned from2 sentences. A gravitational field may disrupt (ice chunks).Logical formLearned from2 sentences. Collisions can be gravitational.Logical formLearned from2 sentences. A (force acceleration) can be gravitational.Logical formLearned from2 sentences.