Is the existence of a Dyson Sphere impossible?

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Discussion Overview

The discussion centers on the feasibility of constructing a Dyson Sphere, particularly a monolithic version, and explores alternative concepts like a Dyson Swarm and a Dyson Balloon. The scope includes theoretical considerations and speculative engineering challenges related to energy capture from stars.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants suggest that a monolithic Dyson Sphere may not be possible with current materials, but stabilization could theoretically be achieved using fast-moving components.
  • There is a proposal for a Dyson Balloon that could be inflated by solar radiation pressure, requiring active control to maintain its position around a star.
  • Questions arise regarding the practicality of a Dyson Swarm and its advantages over a monolithic Dyson Sphere, though the specific benefits remain unclear.
  • One participant questions whether the discussion is rooted in science fiction, indicating a potential skepticism about the feasibility of such constructs.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the feasibility of a Dyson Sphere, with multiple competing views on its construction and alternatives remaining unresolved.

Contextual Notes

Limitations include assumptions about material properties, the definition of a Dyson Sphere versus a Dyson Swarm, and the practical implications of active control mechanisms for a Dyson Balloon.

HystereeSis
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Specifically a monolithic Dyson Sphere; also, how would a Dyson Swarm work / be a better option?
 
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HystereeSis said:
Is the existence of a Dyson Sphere impossible?
Not specifically, no.
HystereeSis said:
also, how would a Dyson Swarm work / be a better option?
Better option for what?

Is this a science fiction question?
 
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A monolithic Dyson sphere without moving parts wouldn't be possible with materials we know, but in principle you can stabilize it with fast-moving (faster than orbital velocity) components.
 
Perhaps one could make a Dyson Balloon inflated by solar radiation pressure around a star but there would have to be some sort of active control to keep the balloon centered around the star by manipulating the surface transmission/reflection coefficients to compensate for drift so it would amount to a leaky Dyson sphere. Of course one could not build structures on such a surface but it might go a long way towards Dyson's goal of using all (or most) of the star's energy and making the star less detectable to outside civilizations.
 
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