Planetary Radio • Dec 01, 2015

A Tiny Explorer Called Twinkle

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On This Episode

20151201 Marcell Tessenyi thumbnail

Marcell Tessenyi

Research Associate for University College London

A small but talented UK team is building Twinkle, a small spacecraft with a big mission—exploring the atmospheres of planets orbiting other stars. Emily Lakdawalla has posted her annual review of children’s books about space. Listen to win a signed copy of Randall Munroe’s “Thinking Big.” Bill Nye talks about good news for would-be asteroid miners, while Bruce Betts and Mat Kaplan ponder first words on Mars in What’s Up.

Artist's concept of the Twinkle mission
Artist's concept of the Twinkle mission

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This week's prizes are a lovely Planetary Radio t-shirt and a set of 2016 Year In Space Desk and Wall Calendars.

This week's question:

What was the seventh moon discovered in our solar system? (After our Moon, the four Galilean moons, and Titan?)

To submit your answer:

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

Last week's question:

What was the only time a launch escape system was fired with a crew aboard while the rocket was still on the pad?


The answer will be revealed next week.

Question from the week before:

What were Pete Conrad’s first words spoken as he stepped out of the Lunar Module onto the surface of the Moon?


When Apollo 12’s Pete Conrad stepped on the footpad of the Lunar Module he said, “Whoopee! Man, that may have been a small one for Neil, but that’s a long one for me!” And when he stepped from the footpad to the lunar surface he added, “Oooh! Is that soft and queasy!”