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What Type of Planet is Mercury? - Universe Today
[/caption] Mercury is the smallest and innermost planet in the Solar System. But what type of planet is Mercury? Mercury is classified as a terrestrial planet. The terrestrial planets include the 4 rocky worlds in the inner Solar System: Mercury, Venus, Earth and Mars. The term “terrestrial” comes from the latin term “terra”, meaning Earth. … Continue reading "What Type of Planet is Mercury?"