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Through the years there have been many ideas to explain why starts twinkle. Aristotle said twinkling was caused by wavering vision of people stretching the limits of their eyesight. Later, scientists thought stars rotated and displayed facets like diamonds as they turned. Today, the accepted explanation for what is called “stellar scintillation” is that tiny pockets of air acts like lenses to refract rays of starlight as they pass through them. More modern theories propose that since light acts as a wave, the atmosphere puts wrinkles in the wavefront that creates patterns of interference which creates the twinkle. Physicist Lorne Whitehead from the University of British Columbia is a proponent of the theory supporting tiny lenses refracting light rays. He says the answer is not certain, but the modern theories really aren’t that different. He adds, “The ray model for light is a perfectly reasonable model for stellar scintillation. It gives the same answer.”—Jim L. Wilson and Jim Sandell

Why Do Stars Really Twinkle?, By Daniel Engber,, Accessed November 15, 2015.

Psalm 147:4 (HCSB) He counts the number of the stars; He gives names to all of them.

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