Sign is a term used by astrologers to define a a sector of the sky .
It is one of the twelve sections of Space which were originally marked by certain groups of stars called constellations which are still seen within a narrow band of the sky called the Zodiac . These star patterns were a convenient way to locate the Sun and Moon and planets which appeared to be passing through a particular constellation. Zodiac signs and astrological signs and Sun signs are terms which mean the same as star signs . Strictly speaking, Signs are areas in space , or areas on the map of space called the horoscope chart , in which the Sun and Planets are positioned at various times. A sign cusp is the boundary line between two Signs.