Planetary Radio • Jun 10, 2014

Astronomers Without Borders: Spreading the Wonder Worldwide

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On This Episode

20180418 mike simmons

Mike Simmons

Founder and former leader for Astronomers Without Borders

Astronomers Without Borders Founder and President Mike Simmons and his colleagues share the passion, beauty and joy of the night sky from Argentina to Zambia. Emily Lakdawalla tells us how Mars Exploration Rover Opportunity is driving into Mars’ distant, wet past. Bill Nye shares his thoughts about the just-released report on the future of human spaceflight. Who is the celebrity Random Space Fact introducer? Find out during What’s Up, and enter the space trivia contest to win Geoff Notkin’s book, “Meteorite Hunting.”

Astronomers Without Borders in Iraq
Astronomers Without Borders in Iraq An elderly Kurdish man looks through a telescope at the night sky.Image: Astronomers Without Borders

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This week's prize is a signed copy of Geoff Notkin’s “Meteorite Hunting—How To Find Treasure From Space” and a Planetary Radio T-shirt.

This week's question:

What planet in our solar system has the most moons that are over 1,000 km in diameter, and how many of those moons does that planet have?

To submit your answer:

Complete the contest entry form at or write to us at [email protected] no later than Tuesday, June 17, at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

Name a galaxy that is named after a hat.


The answer will be revealed next week.

Question from the week before:

What is the only spacecraft that flew approximately over the poles of the Sun?


Ulysses is the only spacecraft to have flown over the Sun’s poles.