A horoscope is an astrological chart mapping the positions of the Sun, Moon, and planets at a specific moment, such as birth, with the term deriving from the Greek horoskopos meaning "observer of the hour." In common usage, it refers to newspaper Sun-sign columns, while in Hindu astrology, detailed birth charts called kundali are used to match marriages and time auspicious rituals. However, astrology has been recognized as pseudoscience since the 18th century, and no scientific studies have shown horoscopes to be accurate, as no known physical mechanism links celestial bodies to human life. Psychological tests attribute the perceived accuracy of horoscopes to the Barnum effect, where generic personality descriptions are accepted by a broad audience as uniquely applicable. Ultimately, while the horoscope serves as a stylized geocentric map of the heavens, its interpretive claims remain empirically unsupported.