The Science Guy cruises the solar system looking for meteors and comets. He observes an asteroid belt, shows what to look for during a meteor shower and listens as Halley Comet performs "Got Me Looking."
The Science Guy goes nosing around to investigate the sense of smell and how the olfactory system can detect several thousand different scents. There's also a visit to a museum that specializes in aromas.
The Science Guy examines nature's "tiny building blocks"---atoms and molecules. Nye travels to Los Alamos, N.M., for a look at a particle accelerator and joins some cowboys in a game of "atomic poker."
Samuel L. Jackson assists Nye in an outing that focuses on inventions, and how some of the most valuable ones came about by accident. Included: a music video called "Waiting to Invent" by Eli Whitney Houston.