Past | All

Open Play Hours – June 28th thr 29th

Jun 28, 2025 1:00PM—Jun 29, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours See a list of Upcoming Events Open Play Hours – Summer Hours Start July 3rd 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…

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Open Play Hours – June 21st thr 22nd

Jun 21, 2025 1:00PM—Jun 22, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours See a list of Upcoming Events Open Play Hours – Summer Hours Start July 3rd 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…

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Open Play Hours – June 19th

Jun 19, 2025 1:00PM—5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours 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 Hours are: Closed June 19–22 for Maintenance Saturday and Sunday: 1 PM – 5 PM…

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Open Play Hours – June 14th thr 15th

Jun 14, 2025 1:00PM—Jun 15, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours See a list of Upcoming Events Open Play Hours – Summer Hours Start July 3rd 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…

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Open Play Hours – June 7th thr 8th

Jun 07, 2025 1:00PM—Jun 08, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours See a list of Upcoming Events Open Play Hours – Summer Hours Start July 3rd 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…

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First Mondays: Homeschool Families Exclusive at the LI Explorium 6-2-25

Jun 02, 2025 10:00AM—12:00PM

First Mondays: Homeschool Families Exclusive at the Long Island Explorium Exclusive STEM Adventures for Homeschool Families – Start each month with an enriching and interactive STEM experience designed exclusively for homeschool families at the Long Island Explorium! First Mondays offer a unique opportunity for homeschoolers to enjoy private, hands-on access to our engaging exhibits while…

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Open Play Hours – May 31st thr June 1st

May 31, 2025 1:00PM—Jun 01, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours 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 Hours are: Closed June 19–22 for Maintenance Saturday and Sunday: 1 PM – 5 PM…

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Open Play Hours – May 24th thr 25th

May 24, 2025 1:00PM—May 25, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours 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 Hours are: Closed June 19–22 for Maintenance Saturday and Sunday: 1 PM – 5 PM…

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Open Play Hours – May 17th thr 18th

May 17, 2025 1:00PM—May 18, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours 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 Hours are: Closed June 19–22 for Maintenance Saturday and Sunday: 1 PM – 5 PM…

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First Mondays: Homeschool Families Exclusive at the LI Explorium TUESDAY EDITION 5-6-25

May 06, 2025 10:00AM—12:00PM

First Mondays: Homeschool Families Exclusive at the Long Island Explorium Exclusive STEM Adventures for Homeschool Families – Start each month with an enriching and interactive STEM experience designed exclusively for homeschool families at the Long Island Explorium! First Mondays offer a unique opportunity for homeschoolers to enjoy private, hands-on access to our engaging exhibits while…

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Open Play Hours – May 3rd thr 4th

May 03, 2025 1:00PM—May 04, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours 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 Hours are: Closed June 19–22 for Maintenance Saturday and Sunday: 1 PM – 5 PM…

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Sensory Saturdays, 4-26-25

Apr 26, 2025 10:00AM—11:30AM

Sensory Saturdays at the Long Island Explorium – Sensory Friendly STEM Exploration Join us at the Long Island Explorium for SENSORY SATURDAYS – a brand-new program designed to offer a sensory-friendly environment for families to explore STEM concepts in a calm and supportive space! Highlights: Each month, we’ll feature a special sensory-friendly activity that encourages…

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Open Play Hours – April 26th thr 27th

Apr 26, 2025 1:00PM—Apr 27, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours 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 Hours are: Closed June 19–22 for Maintenance Saturday and Sunday: 1 PM – 5 PM…

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STEM Scouts: Girl Scout Badge Quest – April 24th – Outdoor Innovators

Apr 24, 2025 5:00PM—6:30PM

Long Island Explorium 101 East Broadway Port Jefferson, NY 11777

STEM Scouts: Girl Scout Badge Quest Inspiring Future Innovators STEM Scouts: Girl Scout Badge QuestThursday, April 24th – Outdoor Innovator Girl Scouts (Daisies, Brownies, and Juniors) are invited to the Long Island Explorium to engage in hands-on STEM activities designed to help them earn their STEM badges. Each month, Scouts will explore a new theme—Engineering,…

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Community Mix & Mingle

Apr 22, 2025 6:00PM—8:00PM

Long Island Explorium 101 East Broadway Port Jefferson, NY 11777

Community Mix & Mingle Tuesday, April 22, 2025 | 6:00 – 7:00 PMCommunity Mix & Mingle Connect with neighbors, and friends at our casual evening of conversation, community and celebration Community Mix & MingleShare Your Vision for the Explorium! Tuesday, April 22, 2025 | 6:00 – 7:00 PMLong Island Explorium Please RSVP to help us…

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Spring Break Camp 2025

Apr 14, 2025 9:00AM—Apr 16, 2025 12:00PM

Monday, Tuesday, & Wednesday April 14th, 15th, and 16thSTEM ADVENTURE CAMP – SPRING BREAK 2025 Welcome to the Long Island Explorium’s Spring Break STEM Adventure Camp! Over three exciting mornings, budding scientists, builders, and wayfinders will explore the wonders of nature, experiment with innovative robotics, and embark on an oceanic quest—all inspired by favorite movie…

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First Mondays: Homeschool Families Exclusive at the LI Explorium 4-7-25

Apr 07, 2025 10:00AM—12:00PM

First Mondays: Homeschool Families Exclusive at the Long Island Explorium Exclusive STEM Adventures for Homeschool Families – Start each month with an enriching and interactive STEM experience designed exclusively for homeschool families at the Long Island Explorium! First Mondays offer a unique opportunity for homeschoolers to enjoy private, hands-on access to our engaging exhibits while…

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Sensory Saturdays, 3-29-25

Mar 29, 2025 10:00AM—11:30AM

Sensory Saturdays at the Long Island Explorium – Sensory Friendly STEM Exploration Join us at the Long Island Explorium for SENSORY SATURDAYS – a brand-new program designed to offer a sensory-friendly environment for families to explore STEM concepts in a calm and supportive space! Highlights: Each month, we’ll feature a special sensory-friendly activity that encourages…

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Open Play Hours – March 29th thr 30th

Mar 29, 2025 1:00PM—Mar 30, 2025 5:00PM

Long Island Explorium Port Jeff Harbor 101 East Broadway Port Jefferson, NY 11777

Museum Hours 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 Hours are: Closed June 19–22 for Maintenance Saturday and Sunday: 1 PM – 5 PM…

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STEM Scouts: Girl Scout Badge Quest -March 27th – Robo-Rangers

Mar 27, 2025 5:00PM—6:30PM

Long Island Explorium 101 East Broadway Port Jefferson, NY 11777

STEM Scouts: Girl Scout Badge Quest Inspiring Future Innovators STEM Scouts: Girl Scout Badge QuestThursday, March 27th – Robo-Rangers Girl Scouts (Daisies, Brownies, and Juniors) are invited to the Long Island Explorium to engage in hands-on STEM activities designed to help them earn their STEM badges. Each month, Scouts will explore a new theme—Engineering, Cybersecurity,…

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