Why Does the Sun Sometimes Wear a Halo?

What looked like a rainbow had formed a complete circle around the sun. The ring was pale, bright, and almost perfectly round. But it was not a rainbow at all—it was actually a 22-degree solar halo. This brief, beautiful display tells us that precise geometry and dependable physical laws can turn countless tiny ice crystals into visible order and beauty.

Solar halos often form in thin cirrus or cirrostratus (wispy and thin) clouds high above Earth. These clouds contain ice crystals that commonly grow as six-sided plates or columns. Sunlight enters one face of a crystal and leaves through another face set at a 60-degree angle. As the light moves from air into ice and then back into air, it changes direction through refraction.1 About 22 degrees is the smallest angle produced by this path through the crystal. Other rays of light leave at larger angles, but many gather near that minimum. To an observer, those rays form the sharp inner edge of a large circle around the sun.

The halo’s colors also follow measurable optical rules. Red light bends slightly less than blue or violet light. As a result, a faint red band often appears along the inside of the ring, while the outer part usually looks white because the other colors overlap.1 The circle itself is not a solid ring in the sky; it just looks like that from a distance. Only ice crystals in the right locations send refracted sunlight toward the observer. Crystals spread in every direction around the line of sight create the appearance of a full circle.

Hexagonal geometry, as found in solar halos, appears throughout creation in honeycombs, rock formations, bubbles, and living structures.2 The ice crystal adds another function besides those in these examples to this familiar shape. Here, its six-sided form guides the path of light. Researchers study how crystal size, shape, surface texture, and temperature affect the way ice clouds scatter light. Smooth, well-formed crystals can produce clear halo features, while rough or irregular crystals scatter light more widely, which can blur or hide the ring.1,3

A visible halo therefore requires a specific set of conditions. The atmosphere must contain enough ice crystals, and their structure must allow light to pass through the proper faces. The sun must also be in the right position, and the observer must stand where the redirected light can enter the eye. The crystals may drift across miles of sky and point in many directions, yet each one interacts with light according to the same optical laws. Their motion does not remove the deeper order built into the system.

That order also produces beauty. Creation showcases God not only as Designer and Engineer, but also as an artist. The human ability to recognize beauty makes sense because people were created in God’s image. What appears in the sky as color, balance, and symmetry can direct attention beyond the display to the One who made it.4

Scripture describes this dependable order as part of God’s rule over creation. The Lord said He “appointed the ordinances of heaven and earth” (Jeremiah 33:25). A solar halo is an observable example. The halo may fade within minutes as the clouds move, yet the process behind it remains reliable. Its beauty comes through physical law, not apart from it. In that moment, the sky displays both the orderly workmanship and artistic glory woven into creation.

References

  1. van Diedenhoven, B. 2014. The Prevalence of the 22° Halo in Cirrus Clouds. Journal of Quantitative Spectroscopy and Radiative Transfer. 146: 475–479.
  2. Corrado, J. K. The Hexagon: An Indication of Order and Design in Nature. Creation Science Update. Posted on ICR.org March 13, 2023.
  3. Coy, J. et al. 2026. A Novel Ice Cloud Optical Property Model for Passive and Active Remote Sensing Applications. Journal of Geophysical Research: Atmospheres. 131 (12).
  4. Corrado, J. K. The Beauty of Creation: Created for God’s Own Glory. Creation Science Update. Posted on ICR.org September 7, 2023.

Stage Image:A 22-degree solar halo photographed above Anna Maria Island, Florida, on July 21, 2026. Sunlight refracted through hexagonal ice crystals in high cirrus clouds produces the characteristic circular halo.

Stage Image credit: Jonathan K. Corrado

* Dr. Corrado earned a Ph.D. in systems engineering from Colorado State University and a Th.M. from Liberty University. He is a freelance contributor to ICR’s Creation Science Update, works in the nuclear industry, and is a Captain in the U.S. Naval Reserve.

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