Path: ...!3.eu.feeder.erje.net!feeder.erje.net!news2.arglkargh.de!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Jeroen Belleman Newsgroups: sci.electronics.design Subject: Re: Shielding spacecraft against cosmic radiation Date: Fri, 15 Mar 2024 13:11:29 +0100 Organization: A noiseless patient Spider Lines: 112 Message-ID: References: <34h1vihp32geb2olkcscfksbr8k0bdgdmu@4ax.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Fri, 15 Mar 2024 12:10:04 -0000 (UTC) Injection-Info: dont-email.me; posting-host="81f0ccbfd9a2580dedcca09896a541db"; logging-data="2390046"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18cloqFPk2DoCkVopNRQQzX" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Cancel-Lock: sha1:vN9gF/a6tgzr8nzaH7b6u9x9L2E= In-Reply-To: Content-Language: en-US Bytes: 6205 On 3/15/24 10:35, John Larkin wrote: > On Fri, 15 Mar 2024 07:28:39 GMT, Jan Panteltje > wrote: > >> On a sunny day (Thu, 14 Mar 2024 10:38:47 -0700) it happened john larkin >> wrote in : >> >>> On Thu, 14 Mar 2024 16:46:07 GMT, Jan Panteltje >>> wrote: >>> >>>> On a sunny day (Thu, 14 Mar 2024 08:13:31 -0700) it happened John Larkin >>>> wrote in : >>>> >>>>> On Thu, 14 Mar 2024 06:13:43 GMT, Jan Panteltje >>>>> wrote: >>>>> >>>>>> On a sunny day (Wed, 13 Mar 2024 03:54:24 -0700) it happened John Larkin >>>>>> wrote in : >>>>>> >>>>>>> On Wed, 13 Mar 2024 07:09:47 GMT, Jan Panteltje >>>>>>> wrote: >>>>>>> >>>>>>>> On a sunny day (Tue, 12 Mar 2024 14:18:18 -0700) it happened john larkin >>>>>>>> wrote in <34h1vihp32geb2olkcscfksbr8k0bdgdmu@4ax.com>: >>>>>>>> >>>>>>>>> On Tue, 12 Mar 2024 06:22:55 GMT, Jan Panteltje >>>>>>>>> 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. > And we are skeptical of your intelligent design stance. For that matter, there are quite a few blunders in living beings that an intelligent designer wouldn't have made. Jeroen Belleman