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Planetary Radio

Mark Showalter: Unraveling the Mysteries of Planetary Rings

Airdate: Monday, October 22, 2007
Running Time: 00:28:52
Listen: Windows Media | MP3

Planetary astronomer Mark Showalter of the SETI Institute's Carl Sagan Center for the Study of Life in the Universe is one of our planet's foremost experts on the rings surrounding Saturn and other planets. He shares the latest findings revealed at the annual meeting of the American Astronomical Society's Division of Planetary Sciences, with special focus on Uranus and Jupiter. Emily Lakdawalla catches up with the speediest spacecraft, while Bruce Betts and Mat Kaplan announce a new space trivia contest and the beginning of Planetary Radio's fifth anniversary contest. Anyone who submits a correct answer in one of the next five weekly space trivia contests will be eligible for special prizes, including a certified fragment of a Mars meteorite donated by Spaceflori.com.

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Guests

• Mark Showalter, planetary astronomer

Related Information

• Emily Lakdawalla's blog entry on Mark Showalter presentation at DPS
• Mark Showalter Bio
• Planetary Society awards presented in New York
• Space Shuttle Discovery is go for launch