Terrestrial planet Terrestrial planet 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 are the inner planets closest to the Sun, i.e. Mercury, Venus, Earth, and Mars. The terms "terrestrial planet" and "telluric planet" are derived from Latin words for Earth ("Terra" and "Tellus"), as these planets are, in terms of structure, "Earth-like". Terrestrial planets have a solid planetary surface, making them substantially different from the larger giant planets, which are composed mostly of some combination of hydrogen, helium, and water existing in various
Nearest relative Nearest relative The nearest relative is a designated relationship defined in the legislation of England and Wales through the Mental Health Act 1983, as amended by the Mental Health Act 2007. It is the duty of the Approved mental health professional to determine who is the "nearest relative" of the patient and consult them in the process of assessment, treatment or guardianship. In Section 26 of the Act, there is a specific hierarchy of kinship relations with the patient or in the context of the type and length of joint residency, as well as caring relationships which is used to