In astrology, a horoscope is a chart or diagram representing the positions of the planets, other celestial bodies, and sensitive angles at the time of any event, such as a person's birth. The term horoscope is derived from Greek words meaning, "a look at the hours" [horoskopos, pl. horoskopoi,or "marker(s) of the hour."] Other commonly used names for the horoscope in English include natal chart, natus, birth chart, astrological chart, astro-chart, celestial map, sky-map, nativity, star-chart, cosmogram, Vitasphere, soulprint, radical chart, radix or simply chart, among others.