PETOSKEY — If you looked up at the sky today and noticed a glowing ring around the sun, you’re not alone. That bright, circular halo is a natural optical phenomenon known as a sun halo ...

PETOSKEY — If you look up at the sky on a sunny day, a glowing ring could be visible around the sun under certain conditions. That bright, circular halo is a natural optical phenomenon known as ...

Hong Kong on Tuesday witnessed a rare natural phenomenon, a halo around the sun, that can be experienced ... radius of 22 degrees, with a pale red lining or a purple aura at times.