Science
Why Does the Moon Have a Ring Around It? This Optical Phenomenon Isn’t As Rare As You Think – Green Matters
Why does the moon have a ring around it? December 2020’s full moon also experienced a moon ring, aka a winter halo or 22-degree halo.

The four giant gas planets arent the only ring-bearing celestial objects in our solar system. The moon has a ring, too, from time to time but a very different ring than the ones you might see surrounding Saturn or Jupiter. And if youre reading this during the last week of December 2020, you may have even seen this ring-like phenomenon, also known as the winter halo, surrounding this months Cold Moon.
So, why does the moon have a ring around it? Keep reading to learn all about why a halo-like ring…
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