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To: DUMBGRUNT

2 posted on 09/12/2020 1:33:42 PM PDT by DUMBGRUNT ("The enemy has overrun us. We are blowing up everything. Vive la France!"Dien Bien Phu last message.)
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To: DUMBGRUNT

Heck yeah, the radiometer! You could put propellers on your space ships and not have to use rockets. Well, I’m off to the Patent Office...


3 posted on 09/12/2020 1:37:08 PM PDT by Billthedrill
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To: DUMBGRUNT

7 posted on 09/12/2020 1:45:25 PM PDT by Bratch (If liberty means anything at all, it means the right to tell people what they do not want to hear.)
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To: DUMBGRUNT
The Planetary Society in Pasadena, California, has a cubesat in orbit right now with a solar sail. Which is the spaceship version of the spinny radiometers of our youth.
16 posted on 09/12/2020 2:24:02 PM PDT by absalom01 (You should do your duty in all things. You cannot do more, and you should never wish to do less.)
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