Question

Why do we sometimes see a circle around the moon?

Answer 1

It doesn't always use Era.

Answer 2

It's due to ice particles in the atmosphere. Sometimes rings appear round the sun too.

Answer 3

moon of earth has not any ring around because it has lee gravity .

Answer 4

In theory, there is a ring around every planet, it's just that most aren't large enough to keep it a ring and they floats off or forms a planet. The moon's ring should not be visible to the naked eye, and if visible you may very likely have been mistaken.