Earth Week Finale at Retzer Nature Center

Bring your family to Earth Week Finale at the Retzer Nature Center.

Join in for the Friends of Retzer Nature Center’s EARTH WEEK FINALE!

Free events are offered throughout the day for the whole family to enjoy: hiking, children’s crafts and activities, special programs, planetarium shows, campfire with s’mores, bird watching, a volunteer project and more.

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Saturday, April 25, 2026
10 am – 1 pm
Friends of Retzer Nature Center’s Earth Week Celebration Event
(Recommended for young children and families of all ages – let’s keep learning!)

Bring the family for kid-friendly activities (inside and outside) focusing on how your actions matter and what you can do to keep our planet safe and clean. The hands-on Recycling Exhibit area will allow visitors to experience the complete route recyclable materials can take in our community and how you can help close the loop on this process.

Free • No registration
Recommended for children and families

*Litter Pickup • 9 – 11 a.m. • Meet outside the Maintenance building at Retzer Nature Center in Waukesha. Please dress for the weather.

Saturday, April 26, 2025
11 am – 2 pm
Earth Day Planetarium Show:

• “One World. One Sky. Big Bird’s Adventure” (11 am)

  • Explore the night sky with our friends from Sesame Street. Join Big Bird, Elmo, and Hu Hu Zhu as they take a trip to the Moon. Learn how the Moon differs from Earth and how to find the Big Dipper and North Star.

• “Unseen Earth: Observe, Understand, Respond” NEW! (1 pm)
  • What does the Earth look like? When you close your eyes, you likely imagine a blue planet floating peacefully in space. Surprisingly, this iconic image has been with humanity for only about half a century, and first glimpsed just over 50 years ago.

    Since that transformative moment, our perception of Earth has constantly evolved. In the crystal-clear lenses of satellites, our planet reveals itself in unexpected colors and patterns, delivering enormous amounts of data back to Earth.

    This show presents the story of how satellite technologies have revolutionized our understanding of our home. We witness Earth not merely as a static blue marble but as a dynamic, ever-changing ecosystem.

    Thanks to advanced orbital observations and in situ measurements, we gain unprecedented insights, enabling us to react swiftly even to sudden environmental shifts and natural disasters. Discover how continuous advancements in satellite techniques and coordinated global earth observation programs empower us to monitor our planet more accurately than ever before and respond more effectively to its ongoing transformations.

$5.25 per person | Purchase Tickets Here
All Ages

Showtimes: 11 am • 1 pm

Find more RETZER NATURE CENTER EARTH WEEK FUN!