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Yes. Quite a bit. While we not to sure how hot it will get, in the next 300 million years or so we expect the Sun to either move to the spectral class of G5V-G7V, which in laymen terms means the sun is going to be more Yellow/Orange over the next 300 million years. In a billion years the Sun will have probably reached K1V-K3V or K1IV or K3IV depending on how much larger the sun is at this point. If it has reached a solar radii of 2 or 3 then it will gain the IV tag (Sub Giant) a prime example of a sub giant is the near by star Procyon A which is a F5IV class star. At this point though Life will have extinguished on earth as our oceans have evaporated, but where life ends new life begins, As Jupiter's Moon Europa will be sitting in the Habitable Zone of the Sun. Also during this time an aging Alpha Centauri A will become the brightest star in the night sky "already the brightest star in the Southern Hemisphere" possible out shinning Venus at this point. The Sun will begin going through it's final stages of life starting 2.5 billion years from now and ending 5.4 billion years from now where the sun will move away from K9III to a M1III spectral class and the sun will have finally reached it's red giant phase and at this point the sun will be a huge 100+ solar radii and engulfing most of the inner planets if not all of them. Also this will be the point where the solar system has lost its "habitable zone" do to the huge amount of radiation M class stars produce. For example the nearest star to us Proxima Centauri is a tiny red dwarf that's roughly the size of Saturn can produce more deadly radiation in a day then our sun does in several years(rough estimate) At the end of our Suns life 4.5 billion years from now it will go out with sort of a whimper, For the sun doesn't have enough mass to go supernova. Rather the sun is just gonna shed it's skin so to speak in a process that's simply called a "nova" and create a planetary nebula where whats left of our solar system is. Thus the process begins again and new stars and new planets will be born from the ashes of the sun.

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13y ago

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