One night I noticed a star changing colors and moving perceptibly. But through binoculars, a few dimmer stars in the same field appeared steady. The behavior continued throughout the night, but not a couple of nights later. Why? Allan Hawkinson Carlsbad, New Mexico You’re absolutely right that stars twinkle — and sometimes appear to move aroundContinue reading "Why do some stars appear to twinkle while others don’t?" The post Why do some stars appear to twinkle while others don’t? appeared first...