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From: John Larkin <jl@997PotHill.com>
Newsgroups: sci.electronics.design
Subject: Re: Shielding spacecraft against cosmic radiation
Date: Fri, 15 Mar 2024 09:10:02 -0700
Organization: Highland Tech
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On Fri, 15 Mar 2024 15:52:57 GMT, Jan Panteltje <alien@comet.invalid>
wrote:

>On a sunny day (Fri, 15 Mar 2024 08:04:17 -0700) it happened John Larkin
><jl@997PotHill.com> wrote in <lun8vido07cnl5t4n7t7gl08e3sbinqpr3@4ax.com>:
>
>>On Fri, 15 Mar 2024 10:42:50 GMT, Jan Panteltje <alien@comet.invalid>
>>wrote:
>>
>>>
>>>On a sunny day (Fri, 15 Mar 2024 02:35:27 -0700) it happened John Larkin
>>><jl@997PotHill.com> wrote in <eb58vidh7uivropd4lb3tjbf5iam87cid2@4ax.com>:
>>>
>>>>On Fri, 15 Mar 2024 07:28:39 GMT, Jan Panteltje <alien@comet.invalid>
>>>>wrote:
>>>>
>>>>>On a sunny day (Thu, 14 Mar 2024 10:38:47 -0700) it happened john larkin
>>>>><jl@650pot.com> wrote in <s3d6vi95gfrbs6omoula55soaktalpggru@4ax.com>:
>>>>>
>>>>>>On Thu, 14 Mar 2024 16:46:07 GMT, Jan Panteltje <alien@comet.invalid>
>>>>>>wrote:
>>>>>>
>>>>>>>On a sunny day (Thu, 14 Mar 2024 08:13:31 -0700) it happened John Larkin
>>>>>>><jl@997PotHill.com> wrote in <in46vipa7a3eb6q7au6alobve5vfmv5jso@4ax.com>:
>>>>>>>
>>>>>>>>On Thu, 14 Mar 2024 06:13:43 GMT, Jan Panteltje <alien@comet.invalid>
>>>>>>>>wrote:
>>>>>>>>
>>>>>>>>>On a sunny day (Wed, 13 Mar 2024 03:54:24 -0700) it happened John Larkin
>>>>>>>>><jl@997PotHill.com> wrote in <ae13viptr1sskaqq1h2ru1j9i85sdecfrd@4ax.com>:
>>>>>>>>>
>>>>>>>>>>On Wed, 13 Mar 2024 07:09:47 GMT, Jan Panteltje <alien@comet.invalid>
>>>>>>>>>>wrote:
>>>>>>>>>>
>>>>>>>>>>>On a sunny day (Tue, 12 Mar 2024 14:18:18 -0700) it happened john larkin
>>>>>>>>>>><jl@650pot.com> wrote in <34h1vihp32geb2olkcscfksbr8k0bdgdmu@4ax.com>:
>>>>>>>>>>>
>>>>>>>>>>>>On Tue, 12 Mar 2024 06:22:55 GMT, Jan Panteltje <alien@comet.invalid>
>>>>>>>>>>>>wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>>Shields up: New ideas might make active shielding viable
>>>>>>>>>>>>>Active shielding was first proposed in the '60s. We’re finally close to making it work.
>>>>>>>>>>>>> https://arstechnica.com/science/2024/03/shields-up-new-ideas-might-make-active-shielding-viable/
>>>>>>>>>>>>>
>>>>>>>>>>>>>bit of static oelectricity, 1 MV ?
>>>>>>>>>>>>
>>>>>>>>>>>>That's all absurd, cramming a crew into a tiny dark cylinder, deep
>>>>>>>>>>>>inside tons of magnets, to reduce their radiation exposure a little.
>>>>>>>>>>>
>>>>>>>>>>>Yes that may be more dangerus, tha tI why I like the elctrostatic solution.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>Space is not people-friendly. Earth is.
>>>>>>>>>>>>
>>>>>>>>>>>>Traveling to or living on Mars woud be lethal. Living on the moon
>>>>>>>>>>>>would be bad too.
>>>>>>>>>>>
>>>>>>>>>>>Maybe we could convert some comet, live inside it,
>>>>>>>>>>>use its material for power water and  shelter
>>>>>>>>>>>and put an engine on it and start interstellar travel:
>>>>>>>>>>> https://en.wikipedia.org/wiki/%CA%BBOumuamua
>>>>>>>>>>
>>>>>>>>>>You go first.
>>>>>>>>>
>>>>>>>>>Oh I would not mind flying the comet thing, would want to have a say in the design and food chosen though.
>>>>>>>>>but it will take generations to reach any target destination.
>>>>>>>>>So you have to bring whole families ,
>>>>>>>>>or as things go now, just some skin and have a computah hatch you
>>>>>>>>>and teach you when growing up near the destination.
>>>>>>>>>Makes you wonder if the first life on earth was brought here in a similar way 
>>>>>>>>>(circular reasoning).
>>>>>>>>
>>>>>>>>Earth is too good to be an accident, and our life form is too complex
>>>>>>>>to have evolved from inorganics. Other civiizations in the universe
>>>>>>>>have probably advanced for billions of years. So it's likely that
>>>>>>>>Earth and DNA-based life were designed, maybe as a high school science
>>>>>>>>project. I give it a B-.
>>>>>>>
>>>>>>>Well I won't attack your religious beliefs
>>>>>>
>>>>>>I expressed no religious beliefs, and it's good that you wouldn't
>>>>>>attack any.
>>>>>>
>>>>>>RNA World is a religious belief. Concensus and faith without evidence.
>>>>>>
>>>>>>
>>>>>>>Just watched some news story where a sort of computer robot was teaching kids...
>>>>>>>Again, an other science program today on TV about planets: all sort of basic chemistry was found
>>>>>>>on some moons and asteroids.
>>>>>>
>>>>>>Sure. Chemicals are not life, as a junk box full of parts is not a
>>>>>>working electronic instrument.
>>>>>>
>>>>>>
>>>>>>>They did a testing in the lab and made RNA from just basic chemicals added some heat cycling and dry soak cycle
>>>>>>>like you will find on planets (sun, tides):
>>>>>>> https://phys.org/news/2022-03-insight-life.html
>>>>>>>
>>>>>>>we are just a chemical reaction really.
>>>>>>>
>>>>>>
>>>>>>We are an astoundingly complex structure that uses chemicals and
>>>>>>quantum mechanics. At least I am.
>>>>>
>>>>>from elementary particles to atoms to molecules to self-replicating RNA (check)
>>>>>from RNA to DNA and ever more complex forms like us (check)
>>>>>Readup on Darwin
>>>>>:-)
>>>>
>>>>Read up on the ways our cells operate and reproduce. It's astounding.
>>>>
>>>>Darwin was very smart, but he had no idea how cells work. I think that
>>>>if he had, he'd have been skeptical of random evolution and selection
>>>>as our origin.
>>>
>>>Did you actually READ the
>>> https://phys.org/news/2022-03-insight-life.html
>>>link?
>>>It is all very simple.
>>
>>Too simple. It's not DNA, not cells, it's unlikely to continue
>>replicating outside the lab, and, being a lab experiment, is
>>"intelligent design." Well, moderately intelligent.
>>
>>Lots of chemical reactions can be forced to replicate in the lab.
>>
>>>Life is everywhere buzzing
>>>just like electrons around atoms
>>>
>>>The religious leaders have various routines to keep their power and palaces,
>>>suck your money and wash you brain and force you into obedience
>>>Take a step back.
>>>The rain-dances ended when rain-radar was more accurate
>>>Our lifeform has evolved something called 'ego' to protect ourself.
>>>We are not that more complex than that sunshade with photo sensor that has a voice added
>>>so when the sun shines it says 'sun', I am closing, and if no sun, I am opening.
>>>That, in short, is all consciousness is.
>>>Never the less we are all connected, these days via radio and teefee too.
>>>Drop the mystics
>>>
>>>
>>
>>Blind faith hand-waving about random mutation and selection is mystic.
>>Conjecturing about an actual, unlikely but plausible, origin of life
>>is not.
>>
>>One big problem with accounting for DNA life is that an entire class
>>of possible mechanisms is sneered at because considering them invokes
>>the fear of drifting even slightly towards religion, and we can't
>>allow that. You do that, mocking anything that you think might drift
>>in that direction. Dawkins said that he was a capital-A Atheist first,
>>and everything else flowed from that.
>>
>>He was capital-B Boring too, as compulsive believers tend to be.
>
>Well no use educting the brain washed.
>Best of luck special heap of cells.
>It is not bad that 'I' do not know what you babble about., much worse is that 'you' do not know.

As one rich and famous person said, "Don't be a jerk. Nobody likes
jerks."