When a planet orbits a star, it does so in an elliptical path. As a result, the planet's distance from the star varies throughout its orbit. Kepler's laws state that planets travel faster when they are closer to the star, but slow down when they are farther away. The rate at which they move is determined by the distance between the planet and the star.The time taken by the extrasolar planet and the star to complete one orbit are not the same. The extrasolar planet takes longer to complete one orbit than the star. This is due to the fact that the planet moves slower when it is farther away from the star, but faster when it is closer. This results in a longer total time for a full orbit. Furthermore, the size of the planet's orbit determines the total time taken to complete one orbit. The larger the orbit, the more time it takes to complete one orbit.In conclusion, extrasolar planets take longer to complete one orbit around their stars than stars do because of the varying distance between them and their stars throughout their elliptical orbit.