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Zibi Turtle and a Mission to the Ice Giants

New dark spot on Uranus

Air Date: 09/22/2015
Run Time: 28:50

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Topics: Future Mission Concepts, Planetary Radio, Neptune, Mars, Curiosity (Mars Science Laboratory), Uranus, Bill Nye

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They are the most neglected planets in our solar system, but that status may be changing. Planetary scientist Elizabeth “Zibi” Turtle celebrates NASA’s announcement that it will study a mission to Uranus or Neptune. Emily Lakdawalla has the latest progress report for Curiosity, rolling across Mars. Bill Nye had a blast reading “The Martian.” Someone will win the Xtronaut game in the new What’s Up space trivia contest.

Journey to Mars


Journey to Mars
Click to enlarge.

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Trivia Contest

This week's prize is a prototype version of “Xtronaut,” Dante Lauretta’s game about directing planetary science missions. You’ll also get to join a chat session with Dante, and receive the final version of the game when it’s released.

This week's question:

What word generally refers to three celestial bodies in a line? (Bruce thinks it’s a funny word.)

To submit your answer:

Complete the contest entry form at or write to us at no later than Tuesday, September 29th at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

Who provided the voice of the robot in the classic 60s TV series,“Lost in Space?”


The answer will be revealed next week.

Question from the week before:

SOFIA’s telescope has an effective diameter of 2.5 meters, but it’s actually somewhat larger than that. What is the actual diameter of its mirror?


The actual diameter of the infrared telescope aboard the SOFIA aircraft is 2.7 meters.


No trivia contest spoilers please!

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