[ExI] [Extropolis] Terasem Space Day Colloquium, July 20, 2023

[Keith Henson]

On Tue, Jul 4, 2023 at 10:51 AM John Clark <johnkclark at gmail.com> wrote:
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> On Tue, Jul 4, 2023 at 12:21 PM Keith Henson <hkeithhenson at gmail.com> wrote:
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>> > "explain what we see?"
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>
> Yes, that's what theories are for.
>
>> > It was just to answer your comment about dust.  Something can look
>> like dust from a distance and still be an intentional product.  Non
>> Tethered dust just does not work because the time before it gets blown
>> away is so short.
>
>
> What?! Dust clouds are seen all over the universe, the gravitational collapse of dust clouds is what made the planets and even the sun.

They don't last in the intense light of a star, radiation pressure
blows them away.  You can see that locally in a comet tail.  Tabby's
star is more luminous than our sun,  Sorry, dust just does not work.

>> > If you have a natural explanation for what we see with Tabby's star
>> and the other nearby slow dippers, please let us know.
>
>
> I don't know why thick dust clouds are around some stars but not around others, and I don't know the way gravitational dynamics distributes the dust, but I do know  the dimming must be made by particles too small to be seen without a microscope. There's one other thing I don't know, I don't know why particles made of computronium explains the situation better than particles made of ice. From time to time all scientists find things that they can't immediately explain, but when that happens to astronomers somebody is bound to say if you can't immediately explain it then it must be caused by ET.

There is great reluctance to ascribe what we see to aliens, but when
you have a relatively compact bunch of stars that are doing the same
inexplicable thing another explanation is hard to imagine.

As I said, I hope there is a natural explanation, but nobody has come
up with one yet.

Keith

> John K Clark
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>>
>> On Tue, Jul 4, 2023 at 8:46 AM John Clark <johnkclark at gmail.com> wrote:
>> >
>> >
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>> > On Tue, Jul 4, 2023 at 11:33 AM Keith Henson <hkeithhenson at gmail.com> wrote:
>> >
>> >> > "less dimming in the infrared than in the ultraviolet,
>> >> " dust particles. "
>> >>
>> >> Were you here long ago when dust-sized computronium was invented and discussed?
>> >
>> >
>> > As long as you're gonna have dust size things, how does making those things  be made of computronium improve the ability of your theory to explain what we see? Space aliens add nothing, and Occam's razor says there is no point in needlessly complicating a theory.
>> >
>> > John K Clark
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>> >> Keith
>> >>
>> >> On Tue, Jul 4, 2023 at 2:40 AM John Clark <johnkclark at gmail.com> wrote:
>> >> >
>> >> > On Tue, Jul 4, 2023 at 12:50 AM Keith Henson <hkeithhenson at gmail.com> wrote:
>> >> >
>> >> >> >   I don't know if anyone wants to talk about it, but to me, it looks
>> >> >> > like we may have neighbors who are obscuring substantial amounts of
>> >> >> >  their star's light.
>> >> >> >  One star, who knows?  15 stars in a tight group , , , , While I don't
>> >> >> >  like it, I don't see a way that it could be other than intentional.
>> >> >> > If you can figure out a way this could be "natural," please do.
>> >> >> >
>> >> >> > > https://arxiv.org/pdf/2111.01208.pdf
>> >> >
>> >> >
>> >> >
>> >> >  The paper says "I undertook a search for other objects similar to Boyajian’s star."  [...] " Fifteen new candidates with low rates of dipping, referred to as slow dippers in the paper have been identified. The dippers occupy a limited region of the HR diagram ".
>> >> > Similar stars displaying similar behavior does not suggest alien intelligence at work even if the precise cause of that behavior is not entirely understood. But the thing that kills the alien megastructure theory dead as a doornail, at least for me, is the finding that there is less dimming in the infrared than in the ultraviolet, because there is no way that could happen if the dimming was caused by anything larger than dust particles.
>> >> >
>> >> > Extinction and the Dimming of KIC 8462852
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>> >> > John K Clark
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>> >> >>
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