"Injecting reflective nanoparticles/sulfur dioxide into the atmosphere (stratospheric aerosol injection)

Brightening of low clouds over the ocean by seeding ocean clouds with submicron salt particles

Using space mirrors, that is, many giant mirrors launched into outer space to reflect sunlight."

I think they have been doing all these things already...

This is just the attempt to justify it, ahead of the techniques being made public

PS, the fake sun is there to hide Nibiru's approach by increasing the suns glare.