 The Golden Age of India saw achievements.Gupta made novel advances in the sciences, astronomy (Gupta philosophers proposed that the earth was not flat, but was instead round and rotated on an axis by viewing lunar eclipses and discoveries about gravity and the planets of the solar system, which they used to tell the horoscopes), mathematics (the invention of zero, chess and decimal numeral system), literature (Panchatantra, Kama Sutra and other works), architecture (Mahabodhi Temple) and religion.South India in the 10th and 11th century CE under the imperial Cholas is considered as another Golden Age.