Today's Hours: 
10am - 5pm
Today's Hours: 
CLOSED
Today's Hours: 
CLOSED
Today's Hours: 
10am - 5pm
Today's Hours: 
10am - 5pm
Today's Hours: 
10am - 5pm
Today's Hours: 
10am - 5pm

COSI is now open!

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 Magic Tree House: Space Mission. 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.

Showtimes:
Jan 10 - Mar 16: 12:15pm | 3:15pm
Mar 17 - Mar 31: 12:15pm | 3:15pm | 5:15pm
Apr 2 - May 23: 12:15pm | 3:15pm


Planetary Treasure Hunt

Planetary Treasure Hunt

Search the solar system for hidden treasure with COSI’s Planetary Treasure Hunt. Climb on board the magical Starship C.O.S.I. 43215 for a visit to Mars, Saturn, the Moon and more. You might even experience an alien encounter or two, so keep your eyes peeled – the aliens’ riddles just might help you find the Northern Crown’s missing jewels.
Especially for children 5-10 | Running time: Approximately 25 minutes.

Showtimes:
Feb 24 - Feb 25: 1:15pm

Black Holes: The Other Side of Infinity

Black Holes: The Other Side of Infinity

Among the most mysterious and exotic objects in the Universe, black holes tantalize everyone who learns about them. These dark beasts are one of a few phenomena out in the cosmos where the known laws of physics and general relativity break down. "Black Holes: The Other Side of Infinity" explores the power and grace of these cosmic beasts.
Best for ages 8+ | Running time: Approximately 30 minutes.

Showtimes:
Jan 10 - Mar 6: 1:15pm* | 4:15pm
*No 1:15pm showing on Feb 24-25


Jr. Star Safari 2: Down Under

Jr. Star Safari: Down Under

Discover the animals in the southern night sky. Families with young children will enjoy this engaging and interactive live astronomy show, led by a COSI Star Safari Guide along with the help of Hercules to find animals in the night sky. This show created by COSI especially for early learners, features beautiful animal drawings, real-animal footage from The Columbus Zoo and a tour of the night sky across COSI’s 60-foot dome. No need to be quiet on this safari, the animals won’t mind a few oohs, aaahs and shout-outs from the audience as they discover the beauty and wonder of the stars. Recommended for ages 3-8. Running time: Approximately 22 minutes.

Showtimes:
Jan 10 - Mar 31: 11:15am | 2:15pm


Deep Space

Deep Space Q&A
with COSI Chief Scientist and Astrophysicist: Dr. Paul Sutter

This live show lets you ask COSI’s Chief Scientist, Dr. Paul Sutter, your favorite questions about science and the universe in a dynamic Q&A format. You direct the show as the 60-foot dome in COSI’s Planetarium showcases visuals that help answer your deep questions.
Recommended for all ages | Show length: approximately 30 minutes.

Showtimes:
Dec 7, Jan 11 - 8:30pm (COSI After Dark 21+)
Mar 8 - 9:30pm (COSI After Dark 21+)

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

Showtimes:
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..