Museum Hours See a list of Upcoming Events Open Play Hours – School Year Hours in Effect Open Play at the Long Island Explorium Join us as we celebrate STEM, Space, Math, and Maker Activities all month long with exhibits, workshops, and special events! Join us for hands-on activities, crafts, and more. Our current General…

February Intersession Camp Where STEM Adventures Inspire Future Innovators Please contact Erica Pacheco at epacheco@hcdsny.org to inquire about registering. Email to Inquire about Registering Long Island Explorium February Intersession Camp 2026 Hosted at Harbor Country Day School In partnership with the Long Island Explorium The Long Island Explorium is excited to bring its hands on…

Teen Nights at the Long Island Explorium REGISTER NOW! February 27th, 2026 Details  TEEN NIGHT AT THE LONG ISLAND EXPLORIUM Ages: 11–15Schedule: Last Friday of each month, 6:00–8:00 pmFee: $10 per participantCapacity: 15 teens maximumFood: Pizza, water, and soda provided Teen Night at the Long Island Explorium is a monthly after-hours hangout created for pre-teens…

Skate into STEM: Fun on the ice. Impact in the community. 2nd Annual Skate into STEMEnjoy a STEM takeover of the village center, Sunday, March 8th, 2026 This special event marks two decades of inspiring the next generation of innovators, problem solvers, and creators, and we want YOU to be part of the celebration! The…

STEM Scouts: Girl Scout Badge Quest STEM Scouts: Digital Leadership Thursday, March 12th, 2026 | 5:00 – 6:30 PM Long Island Explorium, Port Jefferson A thrilling STEM mystery adventure for curious Scouts! Who stole the cookies? Step into the shoes of a real detective and use logic, observation, and critical thinking to solve a hands-on…

Teen Nights at the Long Island Explorium REGISTER NOW! March 27th, 2026 Details  TEEN NIGHT AT THE LONG ISLAND EXPLORIUM Ages: 11–15Schedule: Last Friday of each month, 6:00–8:00 pmFee: $10 per participantCapacity: 15 teens maximumFood: Pizza, water, and soda provided Teen Night at the Long Island Explorium is a monthly after-hours hangout created for pre-teens…

Summer Themes See a list of Upcoming Events Open Play Hours – School Year Hours in Effect Open Play at the Long Island Explorium Join us as we celebrate STEM, Space, Math, and Maker Activities all month long with exhibits, workshops, and special events! Join us for hands-on activities, crafts, and more. July 1 -…