* Our solar system: The eight planets in our solar system (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune) all revolve around the sun.

* Exoplanets: However, there are countless planets outside our solar system, called exoplanets. Many of these exoplanets revolve around other stars.

Therefore, while all planets in our solar system revolve around the sun, not all planets in the universe do.