Anomalies may influence an orbit of spacecraft.Logical formLearned from3 sentences. (Radio signals) may be emitted by spacecraft.Logical formLearned from3 sentences. Spacecraft may come_down.Logical formLearned from3 sentences. An alien spacecraft may undergo an arrival.Logical formLearned from3 sentences. Engines may pertain-to a spacecraft.Logical formLearned from3 sentences. Velocities may pertain-to a spacecraft.Logical formLearned from3 sentences. A spacecraft may carry a probe.Logical formLearned from3 sentences. A magnetic field may be detected by a spacecraft.Logical formLearned from3 sentences. A spacecraft can be an observatory.Logical formLearned from3 sentences. A government-agency may send a spacecraft.Logical formLearned from3 sentences. Some spacecraft may arrive.Logical formLearned from3 sentences. A landscape may surround a spacecraft.Logical formLearned from3 sentences. Controllers may hear from a spacecraft.Logical formLearned from3 sentences. A layout may pertain-to a spacecraft.Logical formLearned from3 sentences. A spacecraft can be steady.Logical formLearned from3 sentences.