Just need to reduce the solar incidence, not eliminate it.

The same technology could be used to reduce gw on the earth:

1. an orbiting sunshade

2. putting something in the atmosphere that makes it more reflective, like sulfur dioxide

I wonder how big a sunshade would need to be to reduce temps by, say, one degree. A specific ___location could be shaded by putting the shade in geosynchronous orbit. To finance the sunshade, put a Starbucks or Coca-Cola logo on it.

The kind of sunshades that are reasonably being proposed are not large enough to see from the earth without a very powerful telescope.

A single giant megaproject sunshade is not feasible. But it is possible to make many smaller ones, each diminishing insolation by just a few fractions of a percent.

Or a giant “Welcome to Disney’s World.”

Since so many believe aliens are here already we might as well start advertising to them.

It certainly would. However, these are centuries long plans. A path along which the local issues will be solved.

the intellectual attraction lies exactly in terraforming other planets besides earth. Dreaming big.

> I think it would be easier to just limit greenhouse gas emissions on earth.

Of course it would, but that's besides the point