Stars twinkle, planets do not. Planets appear to shine unwaveringly as a result of the distance between the planets. Even with high-resolution telescopes, stars look like mere dots, seeming to twinkle due to refraction when passing through the earth’s atmosphere. Planets, on the other hand, are much closer to the earth which appear as small discs through a telescope. Refraction is also observed in the case of planets when light from them enters the earth’s surface, but this light from both terminals of the planet repel away from each other in the opposite direction, nullifying their effect. Hence, they appear steady.