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Planetary RadioJune 20, 2018

Kathryn Sullivan, Space Dentistry and More at the International Space Development Conference

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On This Episode
Kathryn Sullivan Head Shot
Kathryn Sullivan

Former astronaut and NOAA Administrator

Trina Ray

Cassini Science Planning and Sequencing Deputy and Titan Orbiter Science Team Co-Chair

Scott Edgington

Cassini Deputy Project Scientist

Linda Dao

International Space University

Casey Profile Picture Thumbnail
Casey Dreier

Chief Advocate & Senior Space Policy Adviser, The Planetary Society

Bruce Betts Head Shot 2015
Bruce Betts

Chief Scientist / LightSail Program Manager, The Planetary Society

Mat Kaplan
Mat Kaplan

Planetary Radio Host and Producer, The Planetary Society

Freeman Dyson wasn’t the only space star at the ISDC. Mat talks with former astronaut and NOAA Administrator Kathryn Sullivan, leaders of the Cassini mission, innovative students and an expert on dental care in space. Keep flossing! Planetary Society Director of Space Policy Casey Dreier has the latest budget info from Washington and tells us about Space Policy Directive-3. Bruce and Mat have picked the name for the supermassive black hole that lurks at the center of the Milky Way galaxy. Who has won?

Kathryn Sullivan

National Space Society

Kathryn Sullivan
Kathryn Sullivan receives the National Space Society’s Space Pioneer Award

Mat Kaplan and JPL Director Michael Watkins

National Space Society

Mat Kaplan and JPL Director Michael Watkins
Mat Kaplan presents JPL Director Michael Watkins a National Space Society Space Pioneer Award on behalf of the Voyager Mission team

Mat Kaplan with a team of Texas students

Mat Kaplan

Mat Kaplan with a team of Texas students
Mat Kaplan with a team of Texas students and their mentor at the ISDC space settlement design competition
UC San Diego SEDS members

Mat Kaplan

UC San Diego SEDS members
UC San Diego SEDS members and leaders of the Colossus project in the ISDC exhibit hall

Related Links:

Trivia Contest

This Week’s Prizes:
A signed, hardcover copy of Chasing New Horizons—Inside the Epic First Mission to Pluto. Also, a 200-point astronomy account.

This week's question:

What is the International Space Station’s approximate altitude range above Earth’s surface? Unique or humorous units are welcome but won’t help you win.

To submit your answer:

Complete the contest entry form at or write to us at no later than Wednesday, June 27th at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

Who was in Earth orbit at the same time as the first woman in space, Valentina Tereshkova?


The answer will be revealed next week.

Question from the week before:

What name would you give the super-massive black hole at the center of the Milky Way galaxy? Mat and Bruce will judge entries on whatever their whim is at that moment, but probably including such factors as cleverness, pseudo-realism and humor.


Bruce and Mat’s choices for naming the Milky Way’s supermassive black hole:
Humor category: The "Singularity Unwinding Circling Kinetically Trapped Ultra-heated Particles,” better known by it's acronym, SUCKITUP!

Dignified name the IAU might actually consider: Erysichthon

Listen more: Explaining Policy, Cassini, Space Policy, podcasts and videos, FY2019 NASA Budget, events and announcements, Planetary Society Political Advocacy

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