Halo Effect

Learn how do 22 degree halos form when sunlight refracts through hexagonal ice prisms in cirrus clouds. Explore the science behind this optical effect.

The anthelion phenomenon is a rare white light spot opposite the sun. Use this guide to understand how ice crystals create it in the Australian sky.

Learn why sun dogs Australia appear as bright spots in the sky. Understand how ice crystal refraction creates these stunning parhelia and mock suns.

A 22-degree solar halo forms when light refracts through hexagonal ice crystals in high clouds. Spot these colourful rings across Australian skies.

See how cloud optical phenomena Australia skies produce form through ice crystals and light. Identify halos, sun dogs and arcs in the atmosphere.

Identify cirrostratus clouds by their ice crystal veil and halo effect. Learn how these high-level clouds signal approaching AU weather changes.