Planetary Radio • Apr 07, 2015

Humans Orbiting Mars: Report on the Workshop

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On This Episode

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G. Scott Hubbard

Advisory Council for The Planetary Society

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John M. Logsdon

Board of Directors of The Planetary Society; Professor Emeritus, George Washington University

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Bill Nye

Chief Executive Officer for The Planetary Society

A human mission to orbit Mars might be possible by 2033, and it might be accomplished at reasonable cost and with existing or nearly-ready technology. Three leaders of a recent Washington DC conference on this topic provide a report. Emily Lakdawalla has been playing with spectacular new images from Saturn. Bruce Betts and Mat Kaplan enjoyed the blood red, totally-eclipsed moon, and they also enjoy offering yet another space trivia contest as we learn What’s Up.

Journey to Mars
Journey to Mars Click to enlarge.Image: NASA

This week's question:

What are trans-Neptunian objects in a 2:1 orbital relationship with Neptune called? (2 orbits of Neptune, 1 orbit of the body)

To submit your answer:

Complete the contest entry form at or write to us at [email protected] no later than Tuesday, April 14th at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

What constellation appears on the flags of Australia and New Zealand? (Come on Southern Hemisphere patriots and fans!)


The answer will be revealed next week.

Question from the week before:

What is the approximate latitude of the center of Jupiter’s Great Red Spot?


The center of Jupiter’s Great Red Spot is at roughly 22 degrees south.