We're still digging through the thousands of comments and suggestions from the listener survey but we hear your requests and suggestions, and now you get to start reaping the benefits. Today we start our survey of the solar system with Mercury. What mysteries is it hiding from us? How similar is Mercury to the other rocky planets? How much do we really know about this first rock from the Sun?
<strong><a href="http://media.libsyn.com/media/astronomycast/AstroCast-070813.mp3">Episode 49: Mercury (15.3MB)</a></strong><br /> <br />
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