Debris can be from collisions.Logical formLearned from3 sentences. A (particle accelerator) may produce collisions.Logical formLearned from3 sentences. An accelerator may produce collisions.Logical formLearned from3 sentences. Collisions can be bimolecular.Logical formLearned from3 sentences. Collisions may arise.Logical formLearned from3 sentences. Some collisions can be with bodies.Logical formLearned from3 sentences. A factor can be in some collisions.Logical formLearned from3 sentences. Collisions can be with protons.Logical formLearned from3 sentences. Fragments can be constituted-of-or-filled-with collisions.Logical formLearned from3 sentences. Collisions can be between stars.Logical formLearned from3 sentences. Collisions can be between (dust particles).Logical formLearned from3 sentences. Collisions can be between packets.Logical formLearned from3 sentences. Charged particles may undergo collisions.Logical formLearned from3 sentences. Persons may investigate collisions.Logical formLearned from3 sentences. Collisions can be a mechanism.Logical formLearned from3 sentences.