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Planetary Radio

Are There Giant Caves on Mars?

Airdate: Monday, June 18, 2007
Running Time: 00:28:52
Listen: Windows Media | MP3

Their discoverers call them the seven sisters. Are these holes in Mars merely very deep pits, or are they skylights opening on huge caves? Glen Cushing, Windy Jaeger, and Tim Titus of the United States Geological Survey will talk about these enigmatic features on the surface of the Red Planet. Emily Lakdawalla brings back a classic Q&A about how the Cassini team keeps track of a plethora of Saturnian rings and moons. Bruce Betts and Mat Kaplan present a special challenge to listeners in addition to our regular space trivia contest. Space headlines, too.

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Guests

• Glen Cushing, planetary scientist
• Wendy Jaeger, planetary scientist
• Tim Titus, planetary scientist

Related Information

• Emily Lakdawalla's May 23 Blog Entry About the "Seven Sisters"
• USGS Astrogeology Research Program