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Coming soon. Please watch this space.
Starting October 2014, Every month, the first saturday will be a good day to drop in at the Nehru Planetarium, New Delhi, in the evening, just before the skywatch with telescopes starts in the Teen Murti lawns.
There will be an "Ask an Astronomer" session in the dome "Under the stars". There will be a recorded dome presentation featuring interviews with noted astronomers, followed by a live online interaction with one or two astronomers. The sessions will be useful for local participants as also to those who wish to participate online.
Here is a link to an old page from 2009, with a compilation of discussions in the spirit of "Ask an Astronomer" from a yahoogroup moderated by the planetarium. The page is no longer being maintained though, it has an archive of some useful discussion.