<p>We take a break from the main narrative in honor of this month's blue moon and turn to a somewhat more frivolous topic — how the term "blue moon" came to mean the second full moon in a calendar month.</p>

We take a break from the main narrative in honor of this month's blue moon and turn to a somewhat more frivolous topic — how the term "blue moon" came to mean the second full moon in a calendar month.

Episode 33: How the Moon Became Blue

A history of astronomy, from antiquity to the present.

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Episode 33: How the Moon Became Blue

Episode 33: How the Moon Became Blue

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