Hittite astronomical texts was also of the opinion that older astronomical tablets recorded the change from Taurus to Aries and he concluded that the Mesopotamian astronomers predicted and anticipated the shift from Aries to Pisces subscribing to these conclusions professor Willie Hart nur suggested that the Sumerians left behind plentiful pictorial evidence to that effect when the spring equinox was in the zodiac of Taurus the summer solstice occurred in the zodiac of Leo partner drew attention to the recurrent motif of a bull lion