> (2) multi-star Dyson sphere under construction. We have a dozen or so stars within 10 light years. This circle is a million light years across. So I’m guessi

> (2) multi-star Dyson sphere under construction. We have a dozen or so stars within 10 light years. This circle is a million light years across. So I’m guessing it would be a ludicrous number of Dyson spheres.