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  1. Behind the headlines about billionaire jaunts into space, there's a deeper motivation – the belief that spreading into the cosmos will save humanity's future.

    • Summary
    • Why Did I Look Into This Question?
    • Clarifying The Question
    • Range of Current Opinion on This Topic
    • What Are The Potential Obstacles to Interstellar Colonization?
    • Conclusions and Questions For Further Investigation
    • My Process
    • Sources

    I investigated this question because of its potential relevance to existential risk and the long-term future more generally. There are a limited number of books and scientific papers on the topic and the core questions are generally not regarded as resolved, but the people who seem most informed about the issue generally believe that space coloniza...

    If people are likely to eventually colonize space, then it increases the potential scale and duration of civilization. This could affect arguments about the importance of trying to affect the long-...
    In correspondence, some people have tried to resist arguments for the extreme importance of the distant future by rejecting the claim that there is a reasonable chance of colonizing space in the fu...

    Will we eventually be able to colonize other stars? I focused on a version of this question assuming unlimited time horizons and “business as usual” (no major catastrophes or unexpected reversals of global trends), with the aim of establishing settlements which could function independently of Earth-based civilization. My version of “business as usu...

    A recent, lengthy report by the National Research Council discussing rationales and approaches stated that it currently isn’t known whether we’ll eventually be able to create self-sufficient off-Earth settlements, but only two of 285 pages were devoted to this issue. People who have done the most in-depth work on the feasibility of space colonizati...

    Big picture, interstellar colonization requires success at each of the following steps (though not necessarily on the first attempt): 1. Attempt to colonize space 2. Get everything you need to build a civilization into a spaceship 3. Get the spaceship going fast in the right direction 4. Have enough of what you need to build a civilization survive/...

    My impression is that the most informed people thinking about these issues believe that space colonization will eventually be possible, and that they believe this for reasons that make sense to me. In my view, the most uncertain step is the part where we build a civilization upon arriving at another star system. However, my intuition—as stated abov...

    This research draws on interviews with Anders Sandberg, Geoffrey Landis, Robert Zubrin, and Charles Stross. Charles Stross was the most credible skeptic of the feasibility of space colonization that I could find. He was cited as a critic of The High Frontieron the book’s Wikipedia page and multiple people I spoke with referred me to Stross as a ske...

    Armstrong, Stuart and Anders Sandberg. 2013. “Eternity in six hours: Intergalactic spreading of intelligent life and sharpening the Fermi paradox.” Acta Astronautica 89 (2013): 1-13. URL: http://www.sciencedirect.com/science/article/pii/S0094576513001148. Beckstead, Nick. 2013. “On the Overwhelming Importance of Shaping the Far Future,” 2013. PhD T...

  2. May 7, 2022 · Type 3 or “galactic” civilization: can access and control much of the energy the entire galaxy generates. Any civilization that can do that can probably also manipulate space-time itself,...

  3. Apr 20, 2022 · You can't become a Type I civilization if you're extinct. So the team takes a more nuanced approach, analyzing the physical limitations of each type of energy source, and balancing them against the need to limit climate change and pollution levels as outlined by the United Nations Framework Convention on Climate Change and the International ...

  4. Aug 26, 2013 · A new study from the University of Oxford looks at the possibility of human colonization throughout the universe. Scientists as eminent as Stephen Hawking and Carl Sagan have long believed that humans will one day colonize the universe.

  5. Jun 27, 2019 · Given enough time and the right technology (and assuming there's not some serious competition), we might even be able to colonize the entire Milky Way galaxy someday. And while this seems like a far-off prospect at best, it makes sense to contemplate what a process like this would entail.

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  7. Mar 26, 2021 · Rather than expanding to create galactic empires, this theory suggests that advanced species would “transcend” by merging with their technology to migrate to energy-rich exotic environments ...

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