(d) The term “head” of an independent regulatory agency shall mean those appointed to supervise independent regulatory agencies and in whom the agencies’ authorities are generally vested, encompassing the chairman, director, or other presiding officer, and, as applicable, other members, commissioners, or similar such officials with responsibility for supervising such agencies.
Double star (Wikipedia)In observational astronomy, a double star or visual double is a pair of stars that appear close to each other as viewed from Earth, especially with the aid of optical telescopes.