Planetarium, Pre-Booked Educational VisitTo book your Planetarium visit, please click this link : https: greatnorthmuseum. org. uk whats on great galaxies the great north museum hancock planetarium Do not pay without first booking with the venue as we cannot guarantee that the slot you wish to use will be available. Terms and Conditions The Planetarium has a maximum capacity of 31 visitors, including adults, per show. If you have a greater number of people in your group you will need to book