Inspiration for the day: movies, books, and halos

Here is my secret. It is very simple. It is only with the heart that one can see rightly; What is essential is invisible to the eye.

— The Little Prince

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halo around the Sun? This fairly common sight occurs when high thin clouds containing millions of tiny ice crystals cover much of the sky. Each ice crystal acts like a miniature lens. Because most of the crystals have a similar elongated hexagonal shape, light entering one crystal face and exiting through the opposing face refracts 22 degrees, which corresponds to the radius of the Sun halo. A similar Moon halo may be visible during the night.