Why are the nearest stars to Earth mainly red dwarfs? When inspecting a list of approx. the 12 brightest stars vs. the nearest stars I see clear differences in luminosity. Again, what explains why these lists are so different in terms of spectral type?! Does it have to do with the amount of interstellar gas present during star formation; in that their is less gas present closer to Earth than further away? I do know that red dwarfs are the dominate spectral type of star in our galaxy. Any thoughts on this would be great :) thanks pf!