As we wait for season TEN (!!!) we're looking back on this season six favorite.

Every day, satellites orbit Earth taking pictures. These images are used for everything from intelligence to weather prediction and even today’s topic – archaeology. When you hear the term “space archaeology” you might envision a khaki-clad astronaut excavating the Moon. But these space archaeologists are actually Earth-bound researchers who use satellite and other aerial imagery to assist in archaeological applications right here on our home planet. This imagery is used to find new archaeological sites, track changes on already discovered ones, and even helps fight looting. On today’s episode, we hear from a researcher using this technology in Central America to see below the trees and assess where ancient structures may have been. And we talk to a Smithsonian scholar who uses satellite data for cultural heritage preservation.

Thanks to our guests in this episode:

• Dr. Kelsey Herndon, University of Alabama in Huntsville. Researcher-NASA SERVIR Program
• Dr. Katharyn Hanson, Cultural Heritage Preservation Scholar- Smithsonian Museum Conservation Institute

Find the transcript here.

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Have you ever wondered how astronauts on the ISS or elsewhere in space vote? It turns out there's a whole Texas law about it. We'll tell you exactly how to cast a ballot from 250 miles up in orbit on AirSpace.

Thanks to our guest in this episode:

• Katherine Schaur - NASA Near Space Network

Find the transcript here.

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I don't think we're in Kansas anymore! There are so many things that fly in Oz, from broomsticks to monkeys to bubbles. With the Wicked movie coming out this November, we thought we'd look back on all things flight in the land of Oz and tell you all about how those effects were made for the screen and the stage.

Thanks to our guest in this episode:

• Ryan Lintelman - Entertainment Curator, Smithsonian National Museum of American History

Find the transcript here.

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