Which planet in this solar system would be most appropriate to terraform?

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Discussion Overview

The discussion revolves around the potential for terraforming various celestial bodies in the solar system, specifically focusing on Venus, Mars, the Moon, and Titan. Participants explore the conditions necessary for terraforming, including gravity, atmospheric composition, and other environmental factors. The conversation encompasses theoretical considerations and speculative ideas regarding the feasibility of such endeavors.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants argue that Venus may be the most suitable candidate for terraforming due to its gravity being similar to Earth's and its existing atmosphere, despite lacking water.
  • Others suggest that the Moon and Mars require significant additional air and energy, making them less favorable options for terraforming.
  • A participant raises concerns about Earth's environmental stability, questioning the ethics of terraforming other planets while neglecting issues on our own planet.
  • Some contributions highlight Titan as a potential candidate for terraforming, though concerns are raised about its lack of a magnetic field and atmospheric retention.
  • There are discussions about the challenges of managing excess atmosphere on Venus and the theoretical processes that could lead to atmospheric collapse over time.
  • One participant mentions the logistical difficulties of supplying volatiles to Mars and the energy requirements for terraforming efforts there.

Areas of Agreement / Disagreement

Participants express differing opinions on which celestial body is the most appropriate for terraforming, with no consensus reached. While some favor Venus, others advocate for Earth as a starting point, and Titan is also mentioned as a candidate. The discussion remains unresolved regarding the best approach and the feasibility of terraforming these bodies.

Contextual Notes

Participants note various limitations, such as the dependence on specific environmental conditions, the challenges of maintaining an atmosphere, and the unresolved nature of the theoretical processes discussed.

  • #61
twofish-quant said:
The other interesting thing were some public opinion polls that I've seen that showed that space exploration even in the 1960's was never particularly popular.
Hmm, interesting.
twofish-quant said:
Blame Gene Roddenberry, George Lucas, and the writers of Doctor Who. Then there are the directors of Avatar, Aliens, and about a dozen other science fiction movies.
I think a lot of the blame lies with commentators and SF writers who baselessly extrapolated the huge advances in transport technology in the first half of the 20th century. When you go from first powered flight to landing on the Moon in 60 years it's easy but flawed to expect this trend to continue.
twofish-quant said:
It's been argued that we are causing a mass extinction event without even trying that hard.

http://en.wikipedia.org/wiki/Holocene_extinction

One reason that I don't think that it may be such a good idea to even try to make another planet suitable for human life is that we will be lucky if we just don't totally mess up this one.
I don't think we have a hope in hell in making anywhere else suitable for life if we can't maintain and fix this planet to how we need and want. The technology and industry requirements are the same if not far easier for doing things on Earth.
 
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  • #62
One citation for this is

“Evolving Public Perceptions of Human Spaceflight in American Culture” by Roger Launius

I think a lot of the blame lies with commentators and SF writers who baselessly extrapolated the huge advances in transport technology in the first half of the 20th century. When you go from first powered flight to landing on the Moon in 60 years it's easy but flawed to expect this trend to continue.

I have a book from the 1960's that explicitly puts in that claim.

There's also the fact that history is non-deterministic. There's little from a physics point of view that would have precluded us having the sorts of space stations that you see in 2001: A Space Odyssey. The space ships to Jupiter are a bit harder. But 2001 is an interesting movie because it was how people in 1968 saw 2001, which tells you a lot about 1968.
 
  • #63
twofish-quant said:
One reason that I don't think that it may be such a good idea to even try to make another planet suitable for human life is that we will be lucky if we just don't totally mess up this one.

Distinctions about 'bad' or 'good' come from living things. So, is it 'bad' to mess up a planet that does not have life?

In the process of messing up this planet we learn a great deal about how it works. It's a terrible way to go about learning something, but having done so, would you willingly for-go the benefits derived from research that, when initially proposed, seems abominable?

And by research I mean 'lets see what happens when we pump gigatons of toxic waste into a perfect garden of eden.'

regardless of the blame or fault that led us into the current situation we might be wise to take what knowledge results and turn it to our advantage. i.e. attempt to set up alternative ecosystems now that we know at least one way to totally screw them up.

Indeed, the potential payoffs of attempting to terraform another planet only go up as the condition of this planet gets worse. Whether the risks go up as well depends on whether you think lifeless planets are valuable as-is in a situation where our own planet is uninhabitable.
 

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