Historical Vedic religion the central ideas and theosophy in the Vedas, and synergistically integrated new ideas. Of the major traditions that emerged from Brahmanism are the six "darshanas", particular the Vedanta, Samkhya and Yoga schools of Hinduism. Vedic religion was followed by Upanishads which gradually evolved into Vedanta, which is regarded by some as the primary institution of Hinduism. Vedanta considers itself "the purpose or goal [end] of the Vedas." There are some conservative schools which continue portions of the historical Vedic religion largely unchanged (see Śrauta, Nambudiri). Of the continuation of the Vedic tradition in a newer sense, Jeaneane D. Fowler writes
Ancient Iranian religion was invoked as the god who "best smite(s), who best destroy(s) the thief and the bandit at this trial." Astral deities figured more prominently in ancient Iranian religion than Vedic religion. This may be explained with the influence of Babylonian science on the Iranians, in particular the western groups. In the Avesta stars and constellations such as Ursa Major, the Pleiades, Vega, Fomalhaut and the Milky Way are mentioned. The most important astral deities seem to have been Tiri and Tishtrya. For reasons that are unknown, Tishtrya is associated with the star Sirius in one Yasht that is entirely devoted