April 23: A Cosmic Wonder

A sundog is an optical phenomenon well known in North Dakota. It often appears as a rainbow-like spot on each side of the sun. When especially bright, sundogs can look like extra suns flanking the real one, sometimes connected by a glowing halo. In rare cases, a third bright spot appears above the sun. Sundogs form in extremely cold weather, when sunlight bends as it passes through ice crystals in the atmosphere, creating bright spots and halos.

You can listen to April 23: A Cosmic Wonder online on Radio and Podcast. Open the player on this page to stream the available audio.

April 23: A Cosmic Wonder is an episode from Dakota Datebook by Prairie Public Broadcasting.

This episode is 2:28 long.

This episode was published on Apr 23, 2026.

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