Gateway to the Stars is our monthly live series for exploring the sights in our ... With a membership to Clark Planetarium, the universe is at your fingertips. Members receive free access to most documentary shows in both theaters, discounts for other programs and invitations to exclusive member events. Join Today Clark Planetariums space exploration-themed building is a unique and spacious facility capable of entertaining up to 800 guests. With the ATK 3D IMAX Theatre, Hansen Dome Theatre, classroom and 10,000 square feet of exhibits, the planetarium is an original twist to the standard party venue. Book Event Great news, we've signed you up. Sorry, we weren't able to sign you up. Please check your details, and try again. Great news, we've signed you up. Sorry, we weren't able to sign you up. Please check your details, and try again.