The only planet takes longest to orbit around the sun:

🧠 Explanation:

Neptune, the solar system’s farthest planet, takes 164.8 years to orbit the Sun, the longest among planets. Located 4.5 billion kilometers away, its slow orbit creates seasons lasting over 40 years. This ice giant, with a methane-blue hue, has a faint ring system and stormy weather. Discovered in 1846, it’s 17 times Earth’s mass. Neptune’s extended orbit highlights the solar system’s vast scale, captivating astronomers. Its unique characteristics, like the Great Dark Spot, make it a key subject in planetary science, revealing insights into distant worlds and cosmic dynamics.