Systems may pertain-to a spacecraft.Logical formLearned from65 sentences. A trajectory may pertain-to a spacecraft.Logical formLearned from65 sentences. A spacecraft can be international.Logical formLearned from64 sentences. Spacecraft can be in orbit.Logical formLearned from63 sentences. A spacecraft can be orbital.Logical formLearned from62 sentences. A spacecraft may arrive at a planet.Logical formLearned from62 sentences. A new generation can be constituted-of-or-filled-with spacecraft.Logical formLearned from61 sentences. A position may pertain-to a spacecraft.Logical formLearned from61 sentences. A fleet can be constituted-of-or-filled-with spacecraft.Logical formLearned from59 sentences. A spacecraft may undergo an orientation.Logical formLearned from58 sentences. A spacecraft can be sophisticated.Logical formLearned from58 sentences. A spacecraft may undergo a landing.Logical formLearned from58 sentences. Spacecraft may undergo a development.Logical formLearned from58 sentences. A spacecraft can be advanced.Logical formLearned from57 sentences. A spacecraft can be automated.Logical formLearned from57 sentences.