Also, I'm not entirely convinced that the problems are analogous. Mars needs to be warmed up, Earth needs to be cooled down. I think a more appropriate challenge would be terragorming Venus.

[–] peopleproblems@lemmy.world 3 points 4 months ago (1 children)

If we can teraform Venus we can teraform the galaxy. The planet is inhospitable in every single way. We can't even land spacecraft that last very long. If materials don't melt from the heat and disintegrate from the atmosphere, then the volcanos ought to do the trick.

It's also harder to get to Venus than it is Mars.

[–] threelonmusketeers@sh.itjust.works 6 points 4 months ago (1 children)

Kurzgesagt did a video on the topic. We just build a planet-sized sunshade to freeze the atmosphere, launch the excess CO2 into space, and import water from the ice moons of the gas giants. Simple, really.

[–] KneeTitts@lemmy.world 3 points 4 months ago (1 children)

We just build a planet-sized sunshade to freeze the atmosphere

Cost, 100 to 1000 trillion. We can barely fund NASA

[–] spittingimage@lemmy.world 5 points 4 months ago* (last edited 4 months ago) (1 children)

Every argument I ever hear against thinking about things in the cool space future boils down to "we couldn't do it this financial quarter so it'll never be possible at all".

[–] Hackworth@lemmy.world 4 points 4 months ago* (last edited 4 months ago)

I like to think about the spacefaring AI (or cyborgs, if we're lucky) that will inevitably do this stuff in our stead, assuming we don't strangle them in the cradle.

[–] toastboy79@kbin.earth 3 points 4 months ago

I have a feeling we'll learn plenty of applicable lessons from one with the other.