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 7 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.

The following daily show times for the current planetarium show are:
10:30, 11:15, 12:00, 12:45, 1:30, 2:15, 3:00, 3:45.
Please note that times are subject to change and may differ on holidays or times at which COSI is open for extended hours. Seating is first come, first served.


Download the COSI Science app for up to date showtimes and more!

Now Showing: Stars of the Pharaohs
Travel to ancient Egypt to see how science was used to tell time, make a workable calendar, and align huge buildings. You’ll learn about the connection the ancient Egyptians felt with the stars and various astronomical phenomena. And thanks to the time Digital Theater’s production team spent in Egypt taking photographs and measurements, you’ll see some of the most spectacular temples and tombs of the ancient world recreated in all of their original splendor. Narrated by John Rhys-Davies.