Bhubaneswar: Sky-gazers enjoyed a sight of great beauty in Bhubaneswar on Wednesday evening as the moon formed a halo.
The ring, or a lunar halo, is formed by the refraction and reflection of light from ice crystals that are suspended in thin, wispy, cirrus or cirrostratus clouds at high altitudes. As light passes through the ice crystals, it is bent at a 22-degree angle, creating a halo of 22 degrees.
According to Wikipedia, a 22-degree halo may be visible on as many as 100 days per year.
