this post was submitted on 18 Jul 2025
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Sufficiently and feasibly

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[–] Beacon@fedia.io 5 points 3 days ago (14 children)

Exactly, this won't be worth looking into before we have interstellar travel, and that is probably a very very long time away

[–] FaceDeer@fedia.io 2 points 3 days ago (5 children)

Actually, it might be worth doing this first. Once you've got even a partial Dyson swarm you've got ample energy to make interstellar travel a lot easier. You could either use beamed propulsion (lightsails or magsails), or manufacture bulk antimatter to fuel high-efficiency rocketry, or a combination of the two.

[–] Beacon@fedia.io 5 points 3 days ago (4 children)

But you can't do this to earth's sun without causing catastrophic changes on earth, so you have to reach a different star before doing this. Blocking out even like 1% of the sun's energy from reaching earth would likely wreak havoc on the earth

[–] spittingimage@lemmy.world 1 points 2 days ago

We'll just keep a window open on that side of the Dyson sphere.

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