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effective distance from the sun for solar sail

Broadcast 3576 Dr. Les Johnson

Guest: Dr. Les Johnson; Topics: Solar sail propulsion and missions plus his science fiction and his new edited book "Stellaris: People of the Stars" which speculates as to what humans will be like when we go to the stars.

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Other weekday times can be morning , afternoon, or evening as you will see from the program schedule below. When you see Wednesday or Thursday program options, it is because of my travel schedule and I am adding in special shows at the time chosen by the guest. The John Batchelor Hotel Mars segment is always Wednesday, 6:30-6:45 PM Pacific Time. All Hotel Mars shows are archived as Space Show programs.

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