Calendar of Events
Share Event: Facebook

How big is the earth?

1:00p to 2:00p
Fri, March 20, 2026
Makenzie Harris
(430) 381-9999

Shadow Science

Learn how we figured out how big the earth was thousands of years ago and try it yourself!The Spring equinox presents a unique opportunity, with the sun directly above the equator we can measure the earth using shadows and ancient science and geometry.

When: 1:00pm Friday 20th March, 2026

Where: Day use

What to Bring: Curiosity!

Event is free with Park entry ($5 for adults 13 and older; 12 and under are free)