Astronomy: The Shadows in Space when the Sun, Moon, and Earth Align

 08/21/2026  |  07:15 PM - 09:45 PM
  Ron Stewart Preserve at Rabbit Mountain  |  Registration Required

Natural History - All Ages Welcome

Discover the drama of eclipses—nature’s most impressive shadow play. We’ll explore how lunar and solar eclipses happen and why they don’t occur every month. This program offers a fascinating look at how moving shadows reveal the motions of Earth, Moon, and Sun. Presentations will be at the picnic shelter, followed by stargazing in the parking area. The Longmont Astronomical Society provides telescopes. Bring a chair or blanket, a light jacket, and a red flashlight, and get ready to enjoy a night under the stars!

Registration is required for this activity.

Boulder County wants to ensure that everyone has equal access to our programs, activities, and services. To request an Americans with Disability Act (ADA) accommodation, please email [email protected], or call 303-441-1386. Submit your request as early as possible, and no later than two business days before the event.

If you need help in another language, please email [email protected], or call 303-678-6277. Contact us as early as possible, and no later than three business days before the event.