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The Tamil Nadu Science and Technology Centre (TNSTC) was established in 1983 and is functioning with the financial assistance of the Government of Tamil Nadu. The centre started its operations in 1988 with the setting up of Periyar Science and Technology Centre and the functioning of the Birla Planetarium. The centre functions under the chairmanship of the minister of education. The planetarium was inaugurated on 11 May 1988 by the then President of India R. Venkataraman. There is about 8 staff at the planetarium. The centre has branches in Coimbatore, Vellore and Tirchy. The Planetarium is considered in the modern world as an Indoor Universe. The Planetarium has provisions to execute diurnal, annual, latitudinal and processional motions. The special effect projectors inside the Planetarium recreate some of the most awe-inspiring astronomical phenomena on the specially perforated aluminum inner dome. Multi-dimensional activities and multimedia projection arrangements which have been incorporated inside the sky theatre make the programmed further lively and excited one. The Planetarium, which is fully computerized, can seat 236 persons at a time. The planetarium conducts sky shows every day at different times in different languages. The shows include the Solar System, sky and seasons, eclipses, Earth, Man on Moon, comets, shooting meteoroids, stellar cycle and the deep sky. As of 2007, since its inception, the planetarium has introduced 35 programs on these topics. Audio-visual programs on various aspects of astronomy and different cosmic phenomena are also shown. Program themes are changed every 3 months. Shows are conducted in English and Tamil. The planetarium and the Science and Technology Centre is open on all days except on national holidays from 10:00 am to 5:45 pm.