How Do Astronomers Know?


Four Sessions: Tuesdays, Oct. 2, 9, 16, 23; 1:30-3:30 PM

Location: Drake Municipal Observatory, 4898 Observatory Rd, Des Moines

Cost: $48

Class Limit: 60


Humans have been watching the sky for several thousand years. In that time only one celestial body has been visited—the moon. How can any scientist even begin to know what is happening on distant worlds without setting foot on them? How do scientists know that a distant planet has water or a surface of diamonds? Some stars have temperatures cooler than Iowa in the summer. How do we know that? Find out how this and other information from throughout the universe has been ascertained as we discuss the exciting field of astronomy. On a clear day, we will look at the sun through a telescope.


Instructor Herb Schwartz is an adjunct instructor at Drake University. He has degrees from both Hofstra and Drake Universities. Herb has lectured regularly at the Observatory for many years.

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