the surface area that is required to
power a laser that reaches the atmosphere
from orbit by solar would be immense...
it is better off with nuclear energy.
though that would need agreement from
many countries, through U.N... probably.
what is worrying. if the magnetosphere
can be affected by the laser.
ChatGPT says unless severe ionization
it wouldn't. so to tweak the laser
to target specific distance and intensity
and coverage to affect greenhouse gas molecules
specifically...
but it most likely won't affect the magnetosphere
at all..... ask the experts Mr Musk.