“...They just need a giant spaceship full of water...go up to the sun and douse part of it. If it’s too hot to get close enough, wait until night...”
FReepers are such brilliant thinkers! I’m proud to be part of this community.
You know, I big umbrella in orbit would do the same thing. You could open it or close it a little to control sunlight. Heck, why not make it thermostatically controlled?!
If you built the umbrella out of solar cells, you could generate electricity and beam it down to the earth via microwave.
Wait, that would actually work.
(Might not be cost-effective, but it would work.)
I think you may be on to something there! :{)