Planet smallest known planet is PSR B1257+12A, one of the first extrasolar planets discovered, which was found in 1992 in orbit around a pulsar. Its mass is roughly half that of the planet Mercury. The smallest known planet orbiting a main-sequence star other than the Sun is Kepler-37b, with a mass (and radius) slightly higher than that of the Moon. Every planet began its existence in an entirely fluid state; in early formation, the denser, heavier materials sank to the centre, leaving the lighter materials near the surface. Each therefore has a differentiated interior consisting of a dense planetary core surrounded
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