[ExI] Dyson Sphere? Why? Just move planets into Habitable Zone.

[BillK]

On Tue, 26 Sept 2023 at 18:03, <spike at rainier66.com> wrote:
>
> Laser power is not needed for moving a planet.  Reflected waste energy from the star is used for that.  Granted it takes not millions but more likely tens of millions of years, and even then only for the smaller planets, such as a tenth of a lunar mass.
>
> spike
>----------------------------------------


The article and their paper “Making Habitable Worlds: Planets Versus
Megastructures,”   <https://arxiv.org/pdf/2309.06562.pdf>
does consider using laser arrays for moving planets.

They make the point that to get enough material to build a Dyson
Sphere you would have to dismantle most of the planets anyway and move
the construction material to the habitable zone. Compared with that
task, just moving a suitable sized planet or asteroid seems much
easier. That also avoids all the problems associated with a Dyson
Sphere that they discuss.

They seem to be considering expanding to multiple times the population
of Earth, so that would require a lot of real estate. Much more than a
few space colonies. Although they could have small colonies as well.



BillK