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Watch the Planetarium Show, “The Dark Side of Light” that will show us how humans impact the night sky. Then head outside to enjoy a naturalist-led Autumn Night Hike where we will use our senses and learn about how wildlife adapts to the dark compared to us! The hike route will be on uneven, wood-chipped and grass trails.DATE/TIME: Wednesday, October 22, 2025 • 6-7 p.m. (+optional presentation 7-8 p.m.)
LOCATION: Retzer Nature Center (S14W28167 Madison St, Waukesha, WI)
COST: $10/person (ages 4+)
REGISTRATION: Required; register online by noon the day before. Walk-ins are welcome if space allows; call ahead and arrive by 5:45 p.m. Register at: https://wiwaukeshacountyweb.myvscloud.com/webtrac/web/search.html?module=AR&type=Special%20Events
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Continue your evening at the Horwitz-DeRemer Planetarium (7-8 p.m.) for a free, fascinating presentation by Michelle Thaller (formerly of NASA) on how our very existence is connected to the stars! No registration required for presentation. Details: https://events.waukeshacounty.gov/default/Detail/2025-10-22-1800-WI-Science-Fest-Horwitz-DeRemer
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Event Venue & Nearby Stays
S14W28167 Madison St, Waukesha, WI, United States, Wisconsin 53188
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