There are 5 terrestial planets, planets composed of silicate rocks or metals: Mercury, Venus, Earth, Mars and Ceres.
No planets in the solar system have a surface quite like Earth. Planets with solid surfaces include Mars, Venus, Mercury and Pluto, which is actually no longer considered a planet but a dwarf planet.There are 44 dwarf planets known of so far. There are also a number of moons in the solar system with solid surfaces.
If you count the three dwarf planets of our solar system, i.e., Ceres, Pluto, and Eris, there are seven terrestrial planets in our solar system. If you don’t count the dwarfs, then there are four (Mercury, Venus, Earth, and Mars). In addition, there are many large moons quite similar to terrestrial planets.
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