Mars Exploration Rover Program Manager John Callas

from Planetary Radio: Space Exploration, Astronomy and Science · host The Planetary Society

John Callas provides a status report on Spirit and Opportunity. Emily Lakdawalla is looking at brilliant Comet Holmes in her Q&A report, and Bruce Betts also makes room for Holmes in his What's Up! review of the night sky.Learn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.

Episode metadata supplied by the publisher feed · Published Nov 19, 2007

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Mars Exploration Rover Program Manager John Callas

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