Tājika is the designation of the Sanskritized Perso-Arabic astrology that arose as an independent school following the second wave of astrological transmission into India in the early centuries of the second millennium CE. It is thus the form of Indian astrology most closely resembling western medieval and Renaissance astrology, which similarly rests on Arabic foundations. Although ultimately derived from the same Greek origins as classical Indian astrology, Tājika comprises many technical elements not included in the first wave of transmission about a millennium earlier. While the earliest known Tājika works in Sanskrit appear to have been composed by authors who were either Jains or members of the non-Brahmin Prāgvāṭa (Porwad) community encompassing both Jains and Hindus, the most influential of these authors was reinvented as a Brahmin by later Tājika tradition. Not all Brahmins were accepting of the foreign science, however, and many Tājika authors felt the need to defend their study of it by arguments that range from the mythological to the pragmatic. In today’s nationalist climate, where apologetic strategies are once more called for, Tājika is often subsumed under the modern paradigm of ‘Vedic astrology’, its extra-Indian origins largely forgotten, ignored, or even denied.Dr. Martin Gansten is a Sanskritist and a historian of religion specializing in astrological and divinatory traditions. He received his doctorate from Lund University, Sweden, where he has taught since 1998 and is now docent.