The planetarium is located inside the Museum complex. You’ll find signboards leading you to it once you enter the compound. I was hoping to catch the 12PM show and got there at 11:40 but they informed me that the last show was at 11 AM. Talk about a fucking disappointment. There’s nothing much else to see there, just a few displays with model satellites and space vehicles.
Entrance is free and show timings are as shown in the picture.