The Universe and Me

Friday, December 30, 2005

This holy slime

Another perhaps interesting weather phenomenon are sun pillars; columns of vertical light that have a divine appearance, especially the ones crossed by a horizontal bar. Sun pillars form around sunrise and sunset when tiny horizontally oriented ice crystals in high level cirroform clouds or ice-fog near the earth’s surface reflect the sunlight as they fall. The pillar will take on the colour of the sun and usually appear red or white. It’s also possible to see moon pillars.


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