Anonymous at Wed, 22 May 2024 19:55:04 UTC No. 16188394

>>16188379
>long gone given the massive distances
I don't think you build a dyson sphere and then disappear in the hundred or a thousand years the light takes to get here from a hundred light years or a thousand light years away

Anonymous at Wed, 22 May 2024 19:57:46 UTC No. 16188403

>>16188379
Indeed we look at the past, if the star is say 300 light years from us what we look at is its image from 300 years ago. But that's the only way we can observe them, so this is what we do.

These are basically best power sources that we know of civilization can get before leaving their home planet for good, making all kinds of crazy stuff like terraforming or interstellar travel possible.

Anonymous at Wed, 22 May 2024 19:59:58 UTC No. 16188408

>>16188379
hundred or a thousand years is a lot of time, anything could happen even to an advanced civ

Anonymous at Wed, 22 May 2024 20:05:44 UTC No. 16188424

>>16188408
true, they could be subjected to a "great replacement" and go the way of White people in the span of like 2 or 3 decades

Anonymous at Wed, 22 May 2024 20:18:14 UTC No. 16188447

>>16188424
can Dyson Sphere builders develop BBC cuckoldry like americans?

Anonymous at Wed, 22 May 2024 21:09:51 UTC No. 16188533

Dyson spheres are inefficient compared to zero point

Anonymous at Wed, 22 May 2024 21:49:43 UTC No. 16188575

Dyson sphere is the most ridiculous thing I ever read. What would anyone do with THAT much heat? It cannot be easily converted to any other form of energy. X-ray and gamma emissions aren't too useful either. One could argue microwaves could be used to produce electricity wirelessly but then how would you transfer that electricity out of the sphere to their planet? Id imagine no one would really live inside the sphere and so the energy has to be carried somewhere distant

Anonymous at Thu, 23 May 2024 00:09:29 UTC No. 16188727

>>16188379
an actual dyson sphere would not allow any light to escape

Anonymous at Thu, 23 May 2024 00:43:35 UTC No. 16188770

>>16188575
Na bro when you have the technology level to make your own stars and planets and relativistic travel you have to make a big ass sphere. Reddit demanded it.

Anonymous at Thu, 23 May 2024 00:57:32 UTC No. 16188784

>>16188379
These structures are often called "Dyson Spheres" but I would submit that a "Dyson Swarm" or "Dyson Cloud" is a much more reasonable, achievable structure for a K<2 civ.

Offering some unwarranted speculation, Dyson structures are plausible if:
-FTL is impossible (this is almost certainly the case), dangerous, impractical, or too expensive
-exotic means of energy production (antimatter/metric-derived/etc) is either dangerous or impractical
-The biology/cognitive infrastructure of the society can be hardened to the hazards of space

Given these conditions, I would suggest that it only makes sense for a post biological society to build Dyson structures. It would be most reasonable for such societies to build these structures around non-flare, long-term main sequence stars. Think about how expensive it would be for a biological society to live in space... It makes no sense! It would be much more efficient to simply upload the worthy constituents of a society into a network where individuals can diffuse between nodes of this server to visit friends or family - doing whatever is deemed to be socially, ethically, and politically unable per the rules of that particular "lobby," "thread," or "server."

At any rate, some articles have recently been published suggested the existence of 6-7 Dyson candidates (finding Suazo et al is an exercise for the reader). Interestingly, all of the candidates identified thus far are M-type stars... Long, lived main sequence stars that, I would suggest, aren't prone to abiogenesis events by virtue of short overlap between conventional organic chromophores and M-star characteristic emission spectra... Could this mean that some advanced, interstellar, Von Neuman sociey is colonizing M-Type stars? Who knows, I haven't had a chance to see if any of these stars are flare stars... Or if they have habitable neighbors.

Nonetheless, I'm sure that some natural process is likely for these stars being flagged as candidates.

Anonymous at Thu, 23 May 2024 01:57:06 UTC No. 16188833

>muh homosexual transhumanist space travel fantasies that i got from watching stupid soiyence fiction movies
>>>/lit/23405053

Anonymous at Thu, 23 May 2024 04:52:11 UTC No. 16188979

>>16188379
The Dyson Sphere is just a thought experiment because it's impractical to completely encase a star with matter. What's more likely to exist are Dyson Swarms due to the accumulation over time of space colonies, space factories, space junk etc in orbit around a star. We're in the process of creating our own Dyson Swarm due to all the space junk launched into in solar orbit and we've only been in space for a few decades. Imagine how much shit will accumulate after we've been a spacefaring civilization for several thousand years with serious construction going on. And if we're making our own Dyson Swarm we should be able to detect the Dyson Swarms of other civilizations that likely began millions of years before ours unless we're the only civilization in the Milky Way galaxy.

Anonymous at Thu, 23 May 2024 05:08:49 UTC No. 16188984

>>16188379
It is impossible to build such a structure without it collapsing in on itself

Anonymous at Thu, 23 May 2024 05:45:33 UTC No. 16189003

>>16188784
Interesting post. Thanks mrohwndan.

Anonymous at Thu, 23 May 2024 05:54:38 UTC No. 16189012

>>16188979
theres nothing serious about space crap, cone head

Anonymous at Thu, 23 May 2024 06:47:42 UTC No. 16189068

>>16188575
>how would you transfer that electricity out of the sphere to their planet?
They likely don't need a planet and live virtual existences in large data commie blocks on the edge of the sphere hence they don't go away or live the same temporary limited existence of bioplebs hence OP's theory about them being long gone is an unnecessary assumption by projecting his own biological limitations onto something much greater than himself.

Anonymous at Thu, 23 May 2024 07:27:09 UTC No. 16189115

>>16188379
The idea that dyson spheres would be a reasonable project for advanced civs comes from the 19th/early 20th century mega-engineering fetishism. It's completely pointless if you can simply have ships/stations with solar panels in space, that use the energy where it's needed immediately. If you could even conceive building a dyson sphere, you certainly could outsource all planetary industry to space, leaving only the private consumer demand for energy.

Anonymous at Thu, 23 May 2024 08:21:10 UTC No. 16189175

Once space colonization takes off there will be a huge dyson swarm of mummified corpses orbiting the Sun for billions of years. People in space colonies will want space burial if only for the cool factor and over time those orbiting mummies will add up. Some people will even want to be buried in their cars or personal spaceships and drive/fly around the Sun forever like that Tesla they launched with the dummy in it.

Anonymous at Thu, 23 May 2024 08:38:46 UTC No. 16189188

>>16188979
>And if we're making our own Dyson Swarm we should be able to detect the Dyson Swarms of other civilizations that likely began millions of years before ours unless we're the only civilization in the Milky Way galaxy.
I believe that humanity is the first intelligent, space-faring civilization. Further, I believe Earth is the only planet to host complex, multicellular life IE animals. If life exists elsewhere in our galaxy, it exists only as microbes.
Firstly, to support complex life as we know it, a planet cannot be too old - life requires at least trace amounts of heavy elements which would not be found on the oldest of planets.
Secondly, even with the right chemical composition, it seems likely that a planet must contain vast oceans of water and be geologically active to produce life. Our best evidence suggests that life began around alkaline hydrothermal vents.
Thirdly, complex multicellular life doesn't seem to have been an inevitability. Life on Earth was limited to single-celled organisms for the first 2 billion years. There's no reason that it couldn't have stayed that way forever, save for a chance infection with a virus - the proteins which enable multicellular organisms to merge cells seem to have a viral origin. No merging of cells, no complex life.
And then, even if you're lucky enough that your planet has the chemical composition, the geological activity and the random viral infection which produces complex multicellular life, there is nothing obviously inevitable about intelligent life like humanity developing. Life on Earth was single-celled for 2 billion years, and then simple-multicellular life dominated for another 1.2 billion years, and then we had 500 million years of increasing diversity of shape and form with amphibians, fish, birds, reptiles, mammals, etc. But we can easily conceive of an alternate Earth where humans simply never arose, or went extinct long before we could become a technological civilization.

We Are Alone.

Anonymous at Thu, 23 May 2024 13:06:55 UTC No. 16189470

>>16188379
But where do they get the energy/materials to actually build it in the first place?

Anonymous at Thu, 23 May 2024 13:20:45 UTC No. 16189483

>>16189470
They just disassemble Mercury and Venus. Those planets aren't much use anyway so might as well harvest them for building materials. That's not enough mass to build a full Dyson Sphere which is just a meme anyway but it's enough to construct a respectable Dyson Swarm.

Anonymous at Thu, 23 May 2024 18:57:36 UTC No. 16189886

>>16188575
>Dyson sphere is the most ridiculous thing I ever read. What would anyone do with THAT much heat?
Boil water.

Anonymous at Thu, 23 May 2024 19:33:21 UTC No. 16189967

>>16189886
yo mama needs a dyson sphere to boil enough water for her daily portion of spaghetti

Anonymous at Thu, 23 May 2024 19:38:08 UTC No. 16189974

>>16188379
By the time a civilization can construct one of those, by that time their engineers can come up with far better alternatives to use all their star energy, while remaining cloaked from predators.

Anonymous at Thu, 23 May 2024 20:55:19 UTC No. 16190103

>>16189967
lmao

Anonymous at Fri, 24 May 2024 06:04:07 UTC No. 16190712

>>16188379
They're not physically possible. The stress on the poles would collapse them
A ring is allowed under current known physics

Anonymous at Fri, 24 May 2024 11:18:09 UTC No. 16190952

>>16189483
yeah but how do you disassemble them in the first place?

Anonymous at Fri, 24 May 2024 17:38:30 UTC No. 16191330

>>16190712
Some versions use multiple orbiting rings to enclose it.

Anonymous at Fri, 24 May 2024 17:45:40 UTC No. 16191339

>>16188379
There's no reason to ever build Dyson spheres. Zero point energy has more than you could ever need.

Anonymous at Fri, 24 May 2024 19:53:42 UTC No. 16191531

>>16191339
How would you extract heat from zero point (0.5*h*w/2pi)? You'd need to reduce the final energy of whatever you're extracting heat from, to zero. If there was anything that could go to 0 energy, we'd call it zero point energy instead.

Anonymous at Fri, 24 May 2024 19:56:15 UTC No. 16191540

>>16191531
>How would you extract heat from zero point (0.5*h*w/2pi)?
Nice try glowie

Anonymous at Fri, 24 May 2024 21:01:57 UTC No. 16191632

>>16188379
>Found
More likely to reach the point where we can build one ourselves before we run into other civilisations.

Anonymous at Sat, 25 May 2024 08:31:14 UTC No. 16192348

>>16190952
>construct mass driver on Mercury
>use mass driver to hurl pieces of Mercury into space
>use Mercury pieces to build Death Star
>use Death Star to destroy Venus
>harvest Venus fragments floating in space to build Dyson Sphere
>profit
easy

Anonymous at Sat, 25 May 2024 09:47:52 UTC No. 16192400

>>16188575
A dyson sphere is just a highly developed star system. You gotta live somewhere, and if you keep building habitats and farms and shit, you'll eventually be capturing all the light from the star.

Anonymous at Sat, 25 May 2024 10:24:38 UTC No. 16192433

>>16188379
> isn't there a high chance those civs are already long gone given the massive distances
No. Why would they go anywhere? At interstellar scales, there is nothing that could wipe out a civilization except maybe an immediately close supernova.

Anonymous at Sat, 25 May 2024 11:04:38 UTC No. 16192451

>>16189188
>>We Are Alone.
there's no ''we'' in atheism

Anonymous at Sat, 25 May 2024 14:56:31 UTC No. 16192649

>>16188727
An actual Dyson "sphere" would be gravitationally unstable and would grind against its sun in relatively short time. What Dyson proposed was a huge number of independently orbiting satellites, not a solid structure.

Anonymous at Sun, 26 May 2024 06:26:34 UTC No. 16193658

Dyson spheres are impossible