I can recall seeing a research poster for something to do with brightness fluctuations of red giants. Just as an aside was an image of a red giant absolutely dw

I can recall seeing a research poster for something to do with brightness fluctuations of red giants. Just as an aside was an image of a red giant absolutely dwarfing Earth's orbit several times over. As in, if it were in the center of our solar system, Earth would be inside the star. Even crazier is that these stars aren't actually much heavier than the sun, they're just that much less dense.