A terrestrial planet can differ in size, distance from there star, average temperature, and if they can hold life. They are all alike because thay were formed the same way, can be made by the same elements, and they all rotate around another terrestrial object.
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A terrestrial planet can differ in size, distance from there star, average temperature, and if they can hold life. They are all alike because thay were formed the same way, can be made by the same elements, and they all rotate around another terrestrial object.
They're made of solid matter, like Mercury, Venus, Earth and Mars. The rest are gas planets: Jupiter, Saturn, Uranus and Neptune.