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#151 2025-05-21 15:54:57
- Calliban
- Member
- From: Northern England, UK
- Registered: 2019-08-18
- Posts: 4,035
Re: Void Postings
For Void re post with images and GIF of asteroid NEAR probe...
https://newmars.com/forums/viewtopic.ph … 94#p231794
That is an impressive composition!
Your recent introduction of the idea of using iron as propellant (reaction mass) might inspire one or two readers to wonder about the potential impact such highly accelerated iron atoms might have when they encounter the hull of a space craft. Your post includes mention of building up layers of material for radiation protection, and provision for arrival of the iron atoms used as reaction mass might seem advisable.
(th)
Short answer: none. Heavy ions have a very short range in matter (microns), due to their interaction with electron shells. Look up the Bethe-Bloch equation. Also, ions will tend to be swept away by solar wind.
One area where this could potentially be a problem, is planetary magnetospheres. Whilst interplanetary space is vast, the Earth's radiation belts start about 1000km above its surface. If they are pumped with ions that are accelerated as Earth's magnetic field lines sweep them, it could do damage to exposed components like solar panels.
"Plan and prepare for every possibility, and you will never act. It is nobler to have courage as we stumble into half the things we fear than to analyse every possible obstacle and begin nothing. Great things are achieved by embracing great dangers."
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#152 2025-05-29 17:42:44
- tahanson43206
- Moderator
- Registered: 2018-04-27
- Posts: 21,456
Re: Void Postings
For Void re Saudi improvement of solar panel performance by cooling...
Here is a topic where a duplicate copy of your report would be welcome:
https://newmars.com/forums/viewtopic.php?id=10837
(th)
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#153 2025-06-03 06:34:37
- tahanson43206
- Moderator
- Registered: 2018-04-27
- Posts: 21,456
Re: Void Postings
For Void re interesting observation about search...
Your discovery as reported in a recent Multi-Ship topic post is interesting.
Thanks for telling us about the possibility that a search on a cell phone might not be reproducible on a desktop or laptop computer.
Since I have never tried this I appreciate your report.
I have an idea for something to try but don't think it is wanted so will avoid creating a disturbance.
(th)
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#154 2025-06-03 12:19:26
- Void
- Member
- Registered: 2011-12-29
- Posts: 8,433
Re: Void Postings
Problem solved as I hoped, a day after I could find it: https://newmars.com/forums/viewtopic.ph … 26#p232026
Ending Pending 
End
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#155 2025-06-04 07:47:25
- tahanson43206
- Moderator
- Registered: 2018-04-27
- Posts: 21,456
Re: Void Postings
This is for Void.
However, I am offering this conversation in the public interest.
First of all, Void, this is NOT about you! You are the innocent participant in a situation that is highly unusual, but not unheard of.
We have received correspondence from someone who I suspect is in Europe, where the laws (apparently) allow citizens to ask to be erased from the Internet.
In your wide reporting on a great many subjects, you have inadvertently come to the attention of someone who wants to be erased from our records. Apparently, in all innocence, you have posted information that the correspondent now wants removed. I don't know the motive, but in the States, we have the Witness Protection program, so perhaps this is something similar.
You may know that SpaceNut's policy is to extend the greatest possible tolerance to posts contributed by members. RobertDyck, kbd512 and I have all followed SpaceNut's lead.
So here is the dilemma... If I tell you what information is requested to be erased, we would be increasing the problem.
Would you be willing to grant kbd512 (our Junior Administrator) permission to modify (erase) the text that is of concern? We would (in this scenario) leave your post exactly as it is, except for removal of identifying information that we have been asked to remove. We are talking about a post that you created almost a year ago, so it is unlikely many readers will ever see it.
Again, this is NOT about you! This is our (Admins) attempt to deal with a most unusual request.
(th)
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#156 2025-06-04 08:36:08
- Void
- Member
- Registered: 2011-12-29
- Posts: 8,433
Re: Void Postings
Request from the just previous post:
Would you be willing to grant kbd512 (our Junior Administrator) permission to modify (erase) the text that is of concern? We would (in this scenario) leave your post exactly as it is, except for removal of identifying information that we have been asked to remove. We are talking about a post that you created almost a year ago, so it is unlikely many readers will ever see it.
Again, this is NOT about you! This is our (Admins) attempt to deal with a most unusual request.
(th)
I say yes, and grant the requested permission. I hope the person requesting will be OK.
I expect that I will never know what post or what it was about.
Ending Pending
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#157 2025-06-04 09:56:07
- tahanson43206
- Moderator
- Registered: 2018-04-27
- Posts: 21,456
Re: Void Postings
For Void re #156
Thank you for your understanding and for permission to make the needed changes. We'll take care of this in the next Google Meeting, when kbd512 is online. As it happens, I do not have the powers needed, since I am only a Moderator, and a Junior one at that.
As far as not knowing goes.... well, that ** is ** the idea!
My thinking on this is that if a person doesn't want to be "remembered" on the Internet, don't post on the Internet.
There's another entire category for posts ** about ** others on the Internet, but that's not something we've had to worry about so far.
(th)
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