Built in memory of B.M.Birla, the well known industrialist and visionary, the Planetarium is considered to be the most modern  in the country. It houses eight galleries - Physical Science, Electronics and Communication, Energy, Life Science, Innovation, Transport, International Dolls and Children and Materials Science. The Planetarium has a 236-seater hemispherical theatre which houses a computerised project to depict the skies and heavenly bodies on a hemispherical dome. This centrally air-conditioned complex also houses a sound studio, classroom and seminar hall. Adjoining the planetarium is the Periyar Science and Technology Museum which will be of interest to students and other science scholars. The Planetarium regularly conducts shows and there are seminars and workshops on astronomy which are held from time to time. It is located at Kotturpuram near Adyar. 
Timing: For English Show, morning 10 am,1.15pm & 3.45 pm. Tamil version 12, 2.30 pm. Entrance fee - Adult: Rs.20,child Rs 10.

Contact : 
Tamilnadu Science & Technology Centre
Gandhi Mandapam Road (Behind CLRI)
Chennai- 600 025
Phone: 91-44 - 24410025 / 24416751 / 24915250