Currently it's converted to the planetarium, called "Planetarium One", and, well, it's not ready. Roof is leaking, bunch of tiles on the cupola is missing, projection software is glitching, and there's only one security metal detector, so queue to the entrance is enormous. Tickets are 10$ apiece, but it's really not worth it right now.
Awesome space for theatre!
only 4 stars cos expensive but a must see in SPB! be there at low hours or its really full and plan at least an hour, have also a small cafe and a virtual reality room.
It's nice but sadly they only put movies in Russian... Not English with subtitles, which is a shame. But it is very unique and you can have a nice time looking at the exhibitions.