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  • Wildest Weather
  • Tiny Giant
  • Summer Skies

Featured Offerings

Become a COSI Member

Join today for a year of FREE admission!

For less than $10 a month for a basic membership, COSI Members enjoy exclusive discounts, free year-long admission to COSI, and free admission to 350+ science centers worldwide! Join today, and you’ll support COSI’s mission to inspire the scientists, dreamers, and innovators of tomorrow.

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Costume Fun Run

Saturday, October 24th

Put on your best costume and head to COSI for the COSI Costume Fun & Run. The event features a 5K race and one mile Family Fun Walk, all with a COSI twist. All participants receive an event t-shirt, food and beverages at the finish line celebration, and a general admission pass to COSI.

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From the Calendar

COSI After Dark - a 21+ Event - Space!
03 Sep 2015 5:30PM - 10:00PM
Take a journey into outer space. Learn about the future of space exploration and how the human body reacts to space travel...
Family Friday Night
25 Sep 2015 5:00PM - 9:00PM
COSI offers extended hours and price reduced admission to families so you can visit, learn, and play late! General admissio...
30 Sep 2015 11:30AM - 1:00PM
Make time for inspiration. Join us for our annual Catalyst Luncheon on Wednesday, September 30, 2015. This dynamic luncheon ...