[ExI] [Extropolis] Re: On vacation until July 2 Re: Tabby's star

[Keith Henson]

https://arxiv.org/pdf/2111.01208.pdf

The conclusions are most interesting.

Keith

On Sun, Jul 2, 2023 at 8:22 AM Lawrence Crowell
<goldenfieldquaternions at gmail.com> wrote:
>
> A disk of dust and planetesimals and a ring-world or some ET generated thing would have a similar signature. However, just use some element of common sense to ask which alternative is most likely.
>
> LC
>
> On Sun, Jul 2, 2023 at 10:10 AM Keith Henson <hkeithhenson at gmail.com> wrote:
>>
>> On Sun, Jul 2, 2023 at 4:50 AM Lawrence Crowell
>> <goldenfieldquaternions at gmail.com> wrote:
>>
>> snip
>>
>> > I think this has been well enough understood according to a circumstellar disk or ring of material.I am not sure what the status of that is, but it is far less extraordinary than assuming a Dyson sphere.
>>
>> The thing that pushed me over into orbiting Dyson patches is the
>> finding that there is a whole nest of stars that are making these slow
>> dips.  One star (Tabby's) is just weird, 15 of them seem likely to be
>> intentional.
>>
>> I understand how low the odds are of having something like this turn
>> up on our doorstep, and it does not bode well for us.
>>
>> It surprises me that they don't seem to be using big lasers to push
>> seeds to new stars, or if they are, none of them are pointed in our
>> direction.
>>
>> If we are looking at aliens, what are they doing with that much
>> energy?  It also seems likely that they don't have FTL or they would
>> be here.
>>
>> For what it is worth, Dyson spheres may be impossible simply because
>> there isn't enough material around a star.  An orbiting patch blocking
>> 22% of the light might be as big as can be made.
>>
>> For something this monumental, it is not making much of a splash in
>> the mainstream media.
>>
>> Keith
>> >
>> > LC
>> >
>> >
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