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Hardin Planetarium at Western Kentucky University



Hardin Planetarium


Ancient Earth

The form for booking a visit to see this show is  at the bottom of this page!





Let's go back to the beginning.


So how old is the Earth...and how do we know? Humans have learned to read the story left behind in the Earth itself. In the late 1800s, various tests established the age of the Earth to be at least one hundred million years. With the discovery of radioactivity, we determined the Earth to be about 45 hundred million years old. This presentation leads us through the mystery of Earth's origin and provides a startling and inescapable conclusion as to when it all began.




 Appropriate Audience

Grades 6 - 12


Running Time

35 minutes, with optional Q&A period


Audience Size Limit

40 maximum (for groups wishing to bring a larger audience, click here to see some alternatives)


Academic Subjects Addressed

Early stages of solar system, planetary formation


On-Line Show Request
Kindly make your first approach to booking a show the submission of the form below. (If you cannot yet fill out one field, enter "not yet known" or "unsure," etc.) We will get in touch with you to discuss your needs more completely once we get your form.
Programs for schools during school hours are generally free of charge. Click here to check to see if there will be a charge to your group for this program.

Show Date

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 Last Modified 4/23/18