A variant may pertain-to a spacecraft.Logical formLearned from5 sentences. Spacecraft can be for missions.Logical formLearned from5 sentences. A spacecraft can be recovered.Logical formLearned from5 sentences. A center may pertain-to a spacecraft.Logical formLearned from5 sentences. A spacecraft may undergo a modification.Logical formLearned from5 sentences. A spacecraft can be in an attitude.Logical formLearned from5 sentences. A spacecraft may go behind the moon.Logical formLearned from5 sentences. A signal may be received from a spacecraft.Logical formLearned from5 sentences. Spacecraft can be in a male.Logical formLearned from5 sentences. A spacecraft may transmit data.Logical formLearned from5 sentences. Experiments may be carried on a spacecraft.Logical formLearned from5 sentences. A spacecraft can be spherical.Logical formLearned from5 sentences. Some spacecraft may approach a planet.Logical formLearned from5 sentences. An asteroid may be encountered by a spacecraft.Logical formLearned from5 sentences. Problems can be with a spacecraft.Logical formLearned from5 sentences.