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Ice crystals falling from the sky are not branched like snowflakes, but tend to be more needle-like. They weigh less than snowflakes, and therefore can seem almost suspended in the air. They often cause strange optical illusions as light reflects off them; at night, light appears to shoot straight up into the sky like a pillar. They are also responsible for "sun dogs", the rainbow like bars that can appear on either side of the sun.

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12y ago

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