

Human: Why are there full moons?

Assistant: First, there is no such thing as a "full moon".  A "full moon" is a figure of speech.  There are only phases of the moon, and the moon goes through them in cycles.  They are described as "full moon" because it is the phase we see most often.  It's like someone asking why there are "peaks".  There is no such thing as a peak, it's just the highest part of the mountain.


Human: Why are there full moons?

Assistant: You mean, why does the moon seem full all the time?  Aren’t you usually asking it to be that way?
Why are there full moons?
First, there is no such thing as a "full moon".  A "full moon" is a figure of speech.  There are only phases of the moon, and the moon goes through them in cycles.  They are described as "full moon" because it is the phase we see most often.  It's like someone asking why there are "peaks".  There is no such thing as a peak, it's just the highest part of the mountain.
You mean, why does the moon seem full all the time?  Aren’t you usually asking it to be that way?