Stars appear to twinkle because of the Earth's atmosphere. As light from a star travels through the atmosphere, it is affected by pockets of air with different temperatures and densities. This causes the light to bend and flicker, giving the appearance of twinkling. Planets, on the other hand, are much closer to Earth and their light is not as affected by the atmosphere.
While planets do not typically twinkle, under certain conditions they may appear to do so. If the atmosphere is particularly turbulent, or if the planet is very low on the horizon, its light may be distorted enough to create a twinkling effect.
No, stars do not all twinkle in the same way. The amount and type of twinkling depends on the star's distance from Earth, its brightness, and the atmospheric conditions. Stars that are further away and appear brighter in the sky are more likely to twinkle.
Even with a telescope, planets do not typically appear to twinkle. This is because the telescope is able to magnify the planet's light, making it less affected by the atmosphere. However, under certain atmospheric conditions, some twinkling may still be visible.
Technically, all planets can twinkle under the right conditions. However, since they are much closer to Earth than stars, the effect is not as noticeable. The most likely planet to twinkle would be Venus, as it is the brightest planet in the sky and can appear low on the horizon, creating more atmospheric distortion.