A loss of a spacecraft can be a center of controversy.Logical formLearned from8 sentences. Spacecraft may be designed.Logical formLearned from8 sentences. A spacecraft may end a mission.Logical formLearned from8 sentences. A spacecraft may undergo a building.Logical formLearned from8 sentences. A spacecraft may pertain-to an airline.Logical formLearned from8 sentences. Heat may challenge (spacecraft designers).Logical formLearned from8 sentences. A spacecraft can be on the ground.Logical formLearned from8 sentences. (Spacecraft visits) can be difficult.Logical formLearned from8 sentences. Questions can be about a spacecraft.Logical formLearned from8 sentences. A spacecraft may find signs.Logical formLearned from8 sentences. A spacecraft can be dead.Logical formLearned from8 sentences. Some spacecraft may fly.Logical formLearned from8 sentences. A spacecraft may draw energy from the sun.Logical formLearned from8 sentences. A (robot spacecraft) may be headed.Logical formLearned from8 sentences. A spacecraft may yield evidence of an ocean.Logical formLearned from8 sentences.