There is only one planet in the solar system that is known to have active volcanoes. That is Earth.
There are more than 300 planets currently known to be outside our solar system.
There are 18 known planets in the solar system that includes Mercury.
There are 8 planets in the solar system, 6 have at least one moon. Mercury and Venus have no known moons.
Our solar system has eight known planets. Before 2006 the system was considered to have nine; Pluto got demoted to a minor or dwarf planet.
yes they do Another Answer: The eight known planets in our solar system do. There is no evidence that others exist.
All of the terrestrial planets (Mercury, Venus, Earth and Mars) had volcanic activity at some time. Only the Earth has active volcanoes now. Mars has the largest volcano in the solar system at over 16 miles high - three times the height of Everest (Now extinct). IO, a moon of Jupiter is known to be volcanically active with over 400 volcanoes.
All the known planets
These are planets that are in orbit around other stars, known as exosolar planets.
There are more than 300 planets currently known to be outside our solar system.
The Pavlof Volcano is one of the country's most active volcanos. It is known as a stratovolcano and it is located on the Aleution Range on the Alaskan peninsula.
There are 18 known planets in the solar system that includes Mercury.
Actually, there are 18 known planets in our solar system, as well as two known protoplanets. For a complete list of objects in the solar system, see the related links.
There are 464 extrasolar planets, and 8 planets within our Solar System. This makes a total of 470 known planets.
We revolve around the Sun. There are only these known planets in our Solar System.
There are 8 planets in the solar system, 6 have at least one moon. Mercury and Venus have no known moons.
Our solar system has eight known planets. Before 2006 the system was considered to have nine; Pluto got demoted to a minor or dwarf planet.
Venus