Would an imploding sun cause the earth to go dark? Would it get brighter first?
Our sun will not implode. It will explode. It will begin to use up its hydrogen fuel in several billion years and then begin to fuse helium, which will cause it to expand (forming a red giant) and eventually violently expel its outer layers. The remaining mass will become a slowly cooling white dwarf star. The Earth may be consumed during the expansion. If it is not, then the brightest light on Earth will be from this white dwarf star, our sun. It will pale in comparison to the sun’s current brightness and the Earth will be a cold and twilighted place.
