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A terrestrial planet, telluric planet, or rocky planet, is a planet that is composed primarily of silicate, rocks or metals. Within the Solar System, the terrestrial planets accepted by the IAU are the inner planets closest to the Sun: Mercury, Venus, Earth and Mars.
Terrestrial planets are Earth-like planets made up of rocks or metals with a hard surface. Terrestrial planets also have a molten heavy-metal core, few moons and...
The Basics: What is a Terrestrial Planet? In our solar system, Earth, Mars, Mercury and Venus are terrestrial, or rocky, planets. For planets outside our solar system, those between half of Earth’s size to twice its radius are considered terrestrial and others may be even smaller.
These rocky terrestrial planets include the four closest to our sun: Mercury, Venus, Earth and Mars. What else makes these celestial bodies terrestrial planets, and how do they compare to some of the other wondrous planets in the solar system and beyond? We'll explain.
Terrestrial planets are a type of planet that are primarily composed of silicate rocks or metals. They are also known as rocky planets or inner planets, as they are located closer to the sun compared to gas giants.
Also known as a telluric or rocky planet, a terrestrial planet is a celestial body that is composed primarily of silicate rocks or metals and has a solid surface. This distinguishes them from...
The four innermost planets of our solar system (Mercury, Venus, Earth and Mars) are called the “terrestrial” planets. The name comes from the word “telluric” derived from the Latin words “terra” and “tellus”, used to refer to Earth.