These planets are Mercury, Venus, Earth and Mars. Terrestrial planets have solid compositions, composed of frozen and semi-liquid innercores, mantles and crusts.
Mercury has a huge core, while venus on the other hand is almost the same as earth, in terms of size and density. Usually made up of metal, silicate and a rocky surface.
• Mercury, fastest and smallest planet.
• Venus, most harsh and hottest planet.
• Earth, livable and ideal planet with one natural satellite or moon.
• Mars, red and rusty planet with two natural satellite or moon.
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