Due to restricted spaces, some COSI experiences will remain closed for the foreseeable future, including the Planetarium. Please check back again soon for updates on the return of this COSI experience.
The COSI Planetarium—the largest in Ohio—features state-of-the-art digital technology that offers an unsurpassed glimpse of our incredible universe. The COSI Planetarium’s Digistar 5 projection system and 60-foot dome will transport you to the farthest reaches of the galaxy, to undersea volcanoes and distant lands, and even into the human body. For all who wonder, who question, who dream, your window to the universe is now open at COSI.
Hearing assist devices are available for all shows within the Planetarium. No special reservations or advance notice is required, simply notify the Planetarium usher that you would like the subtitled version of show as you hand them your ticket. If you are planning a visit as a group you can make this request in advance.