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No Mars sample return.



 
 
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  #31  
Old November 25th 08, 07:05 AM posted to sci.space.history,sci.space.policy
Pat Flannery
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Default No Mars sample return.



Greg D. Moore (Strider) wrote:
The problem with such designs is, it isn't strictly friction holding stuff
there.


Yeah, a lot of the dust adhesion could be due to electrostatic effects.

Pat
  #32  
Old November 25th 08, 07:32 AM posted to sci.space.history,sci.space.policy
Pat Flannery
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Posts: 18,465
Default No Mars sample return.



Pat Flannery wrote:

Yeah, a lot of the dust adhesion could be due to electrostatic effects.


You know, when you think about it, this is pretty interesting.
Due to its high iron oxides content that give it its rust-orange color,
how electrically conductive is Mars soil on average?
To build up any significant electrostatic charge, it can't be too
electrically conductive or it would ground itself out and be unable to
stick to things via electrostatic effects.

Pat
  #33  
Old November 25th 08, 07:20 PM posted to sci.space.history,sci.space.policy
BradGuth
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Default No Mars sample return.

On Nov 24, 11:32 pm, Pat Flannery wrote:
Pat Flannery wrote:

Yeah, a lot of the dust adhesion could be due to electrostatic effects.


You know, when you think about it, this is pretty interesting.
Due to its high iron oxides content that give it its rust-orange color,
how electrically conductive is Mars soil on average?
To build up any significant electrostatic charge, it can't be too
electrically conductive or it would ground itself out and be unable to
stick to things via electrostatic effects.

Pat


Too bad we still have nothing objective pertaining to our Selene/moon
electrostatic charge, or much less having our science obtained from
within the Selene/moon L1 in order to directly measure the Earth-moon
teravolts.

~ BG
 




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