ion engine was RE: [extropy-chat] Saving the Hubble

[Jeff Davis]

Friends, 

Regarding saving the Hubble...

That new SMART-1 ion engine seems to be working well. 
How much does one of them cost.  The first was pricey
naturally, but now the price should go down, right?

And by the way, this business of using xenon as the
reaction mass, can't we go with something a mite less
exotic, like, say, iron?  (I'm looking ahead to those
asteroids...)  What's the story?

Best, Jeff Davis

"When I am working on a problem I never think about
beauty. I only think about how to solve the problem.
But when I have finished, if the solution is not
beautiful, I know it is wrong." 
                      - Buckminster Fuller





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