The weekly half-hour Planetary Radio is public radio's only long format series looking at humankind's quest for knowledge about our solar system and beyond.

New episodes are published no later than 8:00am Pacific Time each Wednesday. Contact host and producer Mat Kaplan if you have questions or concerns.

Beginning with our December 7, 2015 episode, all files listed here are 192 kilobits per second stereo MP3s. Episodes prior to that date are 128 kbps stereo MP3s. Planetary Radio is also available as a mono MP2 from the Public Radio Satellite Service (PRSS) and the Public Radio Exchange (PRX). Pacifica's AudioPort makes episodes available as 192 kbps stereo MP3s. Information about the guests and topic of each week's show can be found on the Planetary Radio home page.

New to Planetary Radio? Have you moved the show on your schedule? Anything else we can do for you? Write to mat.kaplan@planetary.org.

 

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