Question

why planets don't twinkle but stars do ??

Answer 1

Because stars are luminous, and produce own light. Planets don't. They recieve heat and light from sun. Since stars produce own light, they appear to be twinkling in the sky. But if you look closely, a star in the night sky does not shine or twinkle. That is Venus. A planet. Since planets reciveve heat and light from sun, they won't shine.

Answer 2

because the stars are made up of hot gases that burn continuously.but the planets don't have their own light and they are non luminous whereas,stars are luminous