Nova stood before the observation window of the space station, gazing at the vast universe. As the youngest astronaut on the station, he monitored signals from deep space every day. Today, his communicator suddenly emitted a strange buzzing sound. A signal waveform he had never seen before appeared on the screen, coming from an unknown region at the edge of the galaxy. Photon, his AI robot, floated over and said in a mechanical but warm voice: "Nova, this signal frequency is very special. I have never seen similar data in my database." Nova's heart raced. He knew this could be a major discovery.
Nova immediately reported the discovery to the station commander. The commander called an emergency meeting and decided to send an exploration team to investigate the signal source. Nova was selected as a team member, and he was so excited he could barely sleep. Before departure, he carefully checked his spacesuit and equipment. Photon would accompany him as his partner. In the preparation room, Nova met other team members: an experienced navigator and a brave engineer. Together they studied the route map and discovered they would need to cross a dangerous asteroid belt to reach their destination.