Multiple choice general knowledge science & technology

In scientific terms, what is a “blue moon”?

  1. The moon as it appears on a very cold and cloudy night

  2. Something that never occurs

  3. A full moon covered in blue moon dust

  4. The second full moon that occurs in the same month
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In modern calendar terms, a blue moon refers to the second full moon occurring within a single calendar month. Seasonal definitions also exist, but this is the most common calendar-based definition.

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