Aerospace engineer Elio Morillo explains the anticipated communication blackout that the crew will likely encounter during the flyby. According to Morillo, this phenomenon occurs when the spacecraft moves into a position where its instruments and antennas are not aligned with Earth, leading to a temporary loss of signal. He elaborates on the technical challenges that result in this blackout, emphasizing the importance of pre-mission planning to mitigate its effects. Morillo also reassures that the crew is well-prepared for this situation, having undergone extensive training to handle potential disruptions in communication. This blackout is a common occurrence in space missions and is factored into the overall mission timeline, ensuring that the crew can focus on their objectives without undue concern about communication issues.