Answer. Posted on Friday, February 27, 2015.
Stars twinkle because we are viewing them through thick layers of moving air in the Earth’s atmosphere. The beam of light from a star passes through the air, it is bent many times and in random directions, which causes the appearance of twinkling. Excessive twinkling of stars indicates the fact that the temperature, water vapor and density of the different layers of the atmosphere are changing intensively. These factors in the atmosphere lead to heavy dews, rain, snow or stormy weather.