Has the sun been altered over the past couple of decades by the Extraterrestrial Alliance and is this the reason it seems harsher or whiter in appearance rather than the lemon yellow some remember from that earlier time? If so, what are the reasons for and consequences of the changes?

This, in fact, has happened and is an illustration of multiple issues. The first, is the extent to which the Extraterrestrial Alliance can manipulate something even so very basic as the operation of the sun itself and not have any alarms or questions raised among the scientific community about changes that have happened. All the latter have been suppressed through mind control manipulation, to disregard data and to draw no importance about those things that are noticed. This is not so different than the dramatic and bizarre physical evidence of an unusual energy operating on 9/11 associated with the towers collapsing and causing widespread damage that could not be attributed to any conventional scenario, as was assumed to have happened from the collision of airliners into the buildings. The sun has been altered to begin to change its energy and to accelerate its evolution and progression towards extinction. This, in effect, is truncating the potential utility of the earth itself, for once the sun is gone, the earth will not be habitable. So the intuitive awareness of this others have commented on is quite correct, and the timeline as well is accurate, that the sun's life will only extend in the thousands of years and this will be a rate-limiting consequence for humanity. We have told you before, however, that Creator's plan for humanity is for an ascension of the entirety of humanity in the physical, as well as the planet itself. If this does happen, the sun will be of less consequence. There are many ways the ascension can be carried out and the humans have a place compatible with their continued flourishing. So as with the threat of annihilation to human directly, this is yet another way they have tinkered with the environment to cause adverse effects designed to harm human progress and survival both.