Illustrates the journey of radio waves traveling through the universe. As the waves continue their journey deeper into space, the soundtrack gets older and quieter. Along the journey, the waves pass by celestial objects such as planets, stars, and nebulae.
The team listens in to communications coming from outer space and notices a pattern: each signal represents a prime number. They determine that the signal is coming from the star, Vega. After recording the sequence, the team displays on the computer screen that every prime number between 2 and 101 has been sent to them.