Re: Shielding spacecraft against cosmic radiation

On 15/03/2024 2:13 am, John Larkin wrote:

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:

<snip>

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.

John Larkin is a gullible sucker for very kind of dim propaganda - here he is recycling a creationist trope, dealt with at length by Richard Dawkins in
https://en.wikipedia.org/wiki/The_Blind_Watchmaker

Other civiizations in the universe have probably advanced for billions of years.

It's possible, but there's a lot of universe out there.

So it's likely that Earth and DNA-based life were designed, maybe as a high school science
project.

It's conceivable but unlikely. Even a high school science project today would know about error-detecting - and -correcting codes.
And life on earth seems to have started with RNA based replicators - not DNA.
If this sort of thing had gone on, we'd have been panspermia colonised by a better designed replicator.
In reality there are lots of different planets out there, and they probably all need different replicators to get the ball rolling.

I give it a B-.

John Larkin hasn't got the credentials to be allowed to mark this kind of work.
--
Bill Sloman, Sydney