宇宙孤独，智慧难寻。堕天使课外授业百度云

　　Alexandra, a scientist on duty at a radio telescope station, receives a signal that could answer one of humanity’s most transcendental questions. She only has a couple of hours to verify it, but an unexpected family issue will force her to face a dramatic internal struggle in a race against the clock to unveil one of the mysteries of the universe.