Planetary Radio • Jan 24, 2018

Living in Space!

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On This Episode

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Mark Hopkins

Chair for National Space Society Executive Committee

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Rod Pyle

Space Historian and Author

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Daniel Rasky

Chief for NASA Space Portal Office

Mat Kaplan talks with participants in the National Space Society’s recent Space Settlement Summit about human destiny in space. There’s a consensus that we are making real progress, both technological and political, toward permanent installations on the Moon and elsewhere. The total lunar eclipse is almost here. Bruce Betts has the where and when in this week’s What’s Up report.

Future space habitats
Future space habitats Will humans in the distant future build and live in tremendous space habitats like the one picture here? The first steps are being taken by NASA, SpaceX and many other organizations.Image: Skyframe Research & Development / Peter Rubin, Iron Rooster Studios

This week's question:

What are the names of Neptune’s five principal rings?

To submit your answer:

Complete the contest entry form at or write to us at [email protected] no later than Wednesday, January 31st at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

What was the first in space docking of two robotic (unmanned) spacecraft?


The answer will be revealed next week.

Question from the week before:

As measured by surface area, what is the largest known body of liquid on Saturn’s moon Titan?


The largest body of liquid on the surface of Titan is Kraken Mare.