/Tech1d ago

Academic Anders Sandberg presents mathematical analysis on the feasibility of constructing a Dyson sphere by 2027

The analysis debuted at the inaugural Vision Weekend UK

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Anders Sandberg#1151

Existential Hope@HopeExistential

Highlights from the Existential Hope track at @foresightinst's Vision Weekend UK:

Anders Sandberg (@anderssandberg): Building a Dyson sphere by 2027 might sound like a crazy Twitter idea, until you do the math and figure out how to achieve something like that.

Leah Morris: How we can bridge the gap between the discovery and the real-world impact of a new technology by building infrastructure that helps scale progress.

Christine Peterson (@lifeext): 40 years ago, we had no internet; today we have deep learning; 40 years from now, we might have artificial superintelligence and whole-brain emulations.

Zoe Brammer and Ankur Vora: Predicting the future of AI is hard, but they polled us on when we think we'll have a conscious AI companion and an international treaty on AI.

Jonah Weinbaum (@WeinbaumJonah): A roadmap for building the future we want: find new ideas, research how to prioritize them, head hunt for talent to work on them, and connect talent to funders.

7:35 AM · Jun 7, 2026 · 1.7K Views

/Tech1d ago

Academic Anders Sandberg presents mathematical analysis on the feasibility of constructing a Dyson sphere by 2027

The analysis debuted at the inaugural Vision Weekend UK

637945.2K

#375

Original post

Anders Sandberg#1151

Existential Hope@HopeExistential

Highlights from the Existential Hope track at @foresightinst's Vision Weekend UK:

Anders Sandberg (@anderssandberg): Building a Dyson sphere by 2027 might sound like a crazy Twitter idea, until you do the math and figure out how to achieve something like that.

Leah Morris: How we can bridge the gap between the discovery and the real-world impact of a new technology by building infrastructure that helps scale progress.

Christine Peterson (@lifeext): 40 years ago, we had no internet; today we have deep learning; 40 years from now, we might have artificial superintelligence and whole-brain emulations.

Zoe Brammer and Ankur Vora: Predicting the future of AI is hard, but they polled us on when we think we'll have a conscious AI companion and an international treaty on AI.

Jonah Weinbaum (@WeinbaumJonah): A roadmap for building the future we want: find new ideas, research how to prioritize them, head hunt for talent to work on them, and connect talent to funders.

7:35 AM · Jun 7, 2026 · 1.7K Views

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Users in the replies thanked speakers, fellows, grantees, and attendees for making the Foresight Institute's UK Vision Weekend successful, especially those who traveled internationally.

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Foresight Institute@foresightinst

That's a wrap on Vision Weekend UK.

Three days in London. Seven tracks. 30+ speakers. Our first ever UK event in 40 years of Foresight.

Below is a thread on what happened, and what's next:

19h3.6K241

Anders Sandberg@anderssandberg

@HopeExistential @foresightinst OK, 2027 is actually crazy. My talk had 2070 in the title. I think the actual time is [automated space factory date] + [transit to NEO or Main Belt, 1 yr] + [months for replication] + [transit time to inner system 1.5-2 yrs] + [seeding other bodies for heavy swarm 7-25 yrs]

18h373111

Foresight Institute@foresightinst

Thank you to every speaker, fellow, grantee, and attendee who made the weekend what it was. Especially everyone who flew in from across the world to be in a room with people thinking decades ahead.

Special thanks to @apolloaievals, @ARIA_research, @e184media, @CUHPartners, @RenPhilanthropy, @SPRIND, and @andnowstudio for powering this Vision Weekend.

19h574

Foresight Institute@foresightinst

Friday: VIP gathering at @fiftyyears London HQ.

Saturday: talks across emerging AI paradigms, neurotech, longevity, nanotech, and energy at the @BarbicanCentre. Cypherpunk Gala in their tropical central London greenhouse.

Sunday: Funding X, Pathways to Implementation, and Existential Hope at Bankside. The weekend closed with our $10K pitch contest.

19h803

Anders Sandberg@anderssandberg

@HopeExistential @foresightinst The big story (to be posted later, properly) is that replication rate likely is less of a constraint than solar power input, interplanetary transit is both slow and inefficient to speed up with extra energy, and you should go to biggish asteroids to reduce seeding delays.

17h2064

Foresight Institute@foresightinst

What's next:

• Foresight Fellowship applications close July 31: https://foresight.org/engage/fellowship/

• Our AI Nodes in Berlin and SF are in full swing. Apply to join, or reach out to collaborate: https://foresight.org/grants/grants-ai-for-science-safety/

• Save the date for Vision Weekend USA, Nov 13-15 in San Francisco: https://foresight.org/events/vision-weekend-usa-2026/

Until next time!

19h473

efnbsbun@efnbsbun

@HopeExistential @anderssandberg @foresightinst The singularity is coming.

17h6