Let's journey through the stars to sleep with our final reading from this marvelous book. This time, binary star systems, how to measure the vastness of our universe, and a quick summary of key astronomical facts, including the reminder that the parsec is a distance, not a unit of time. Take note, fans of a certain film.

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Read "Astronomy for Young Folks" at Project Gutenberg: https://www.gutenberg.org/ebooks/45112

Music: "Exit Exit" by PC III, licensed under CC BY

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