Sally Ride is our guest on planetary radio. Radio.

Hi everyone, welcome to Public Radio's travel show that takes you to the Final Frontier. I'm Matt Kaplan.

The first American woman in space may now have become

the first woman of science education for girls. It has been more than two decades since Dr.

Sally Ride Road Space Shuttle Challenger into orbit.

She did it one more time after that and would have had a third chance, but for the loss of

that ship and its amazing crew. Now she's a professor of physics at the University

of California, San Diego. We're just moments away from hearing her thoughts about how the times

have improved for women astronauts, engineers, and scientists,

and how her organization called Sally Ride Science is keeping the ball rolling.

She also has a message for the return to flight crew slated for

lift off in discovery next month. Pardon us for omitting our little space

headline segment so that we can feature a slightly extended conversation with Sally.

You'll find plenty of news from around the solar system at planetary.org.

Don't worry about Bruce Betts.

He'll be along with our usual what's up science and silliness.

First up though is Emily who explains why some satellites

have to run as fast as they can to stay in the same place.

I'll be back in a minute with Sally Ride.

Hi.

Hi.

Hi, I'm Emily Lock-Dwalla with questions and answers. A listener asked,

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