The new 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 new 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.

Subtitling is offered in COSI’s Planetarium for One World, One Sky and Wildest Weather in the Solar System. 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.

Now Available: Planetarium Only tickets!

Starry Nights Live

Starry Night Live

This live show explores what can be seen in the sky tonight in central Ohio. Discover the current stars, constellations, planets, and deep sky objects that fill the starry night.
Best for ages 7+ | Running time: Approximately 22 minutes.

Dec 26 - Jan 4: 12:15pm | 3:15pm | 6:15pm
Jan 8 - Feb 4: 12:15pm | 3:15pm

Magic Treehouse

Magic Tree House: Space Mission

Travel with the brother-sister duo, Jack and Annie, in their Magic Tree House as they discover a note that asks them to answer a series of six questions about space. With the help of an astronomer, the Internet, an astronaut, books, and the writer of a mysterious note, Jack and Annie are taken on a wondrous journey of adventure and learning. This exciting voyage will carry visitors to the planets and far out into the Universe where Jack and Annie nearly get… Well, we don’t want to give it away. The adventure is just beginning!
Especially for children 5-10 | Running time: Approximately 35 minutes.

Dec 26 - Jan 4: 11:15am | 2:15pm | 5:15pm
Jan 8 - Feb 4: 11:15am | 2:15pm


Expedition: The Red Planet

Expedition: The Red Planet

Expedition: The Red Planet is a live, interactive show following humanity’s relationship to Mars. This program focuses on the past, present, and future exploration of the red planet. Recommended for ages 7+. Running time: Approximately 25 minutes.

Nov 13 - Feb 4: 1:15pm | 4:15pm

Teacher's Choice Show

Teacher's Choice Show

See the shows of your choice during your field trip or group visit, including Cell! Cell! Cell!, Black Holes: The Other Side of Infinity, Our Solar System, Back to the Moon for Good, Wildest Weather in the Solar System, One World One Sky: Big Bird's Adventure, and Our Universe Above. Learn More

Daily: 9:00am | 9:15am | 9:30am | 9:45am

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Rent It

Host your wedding, party, or private event under swirling galaxies and spectacular starscapes, no matter what the weather outside. The COSI Planetarium is available for weddings, birthday parties, corporate events, and family reunions, and offers customized starshows and seating for over 200 guests. For private rentals, please contact the This email address is being protected from spambots. You need JavaScript enabled to view it.. For birthday parties, please contact the This email address is being protected from spambots. You need JavaScript enabled to view it..