Yes, planets revolve faster around the Sun when they are closer to it in their elliptical orbit. This is due to Kepler's Second Law of Planetary Motion, which states:

* A line segment joining a planet and the Sun sweeps out equal areas in equal intervals of time.

This means that when a planet is closer to the Sun, it must move faster to sweep out the same area in the same amount of time as when it is further away.

Here's why:

* Conservation of Angular Momentum: As a planet moves closer to the Sun, its gravitational potential energy decreases, and this energy is converted into kinetic energy, causing it to move faster.

* Gravity's Influence: The Sun's gravitational pull is stronger when the planet is closer, causing it to accelerate.

Example:

Earth moves fastest in its orbit around the Sun in January, when it is closest to the Sun (perihelion), and slowest in July, when it is furthest away (aphelion).