Honest question on feasibility. How about killing 2 birds with 1 stone? We need to cool off earth and heat up mars, so why not build dish mirror satellites to r

Honest question on feasibility. How about killing 2 birds with 1 stone? We need to cool off earth and heat up mars, so why not build dish mirror satellites to redirect just the right amount of sunlight to mars so earth's temperature maintains a 1-2 degree drop from recent years and mars warm enough for it to start the terraform process?