If the sun is at least 90million miles away and illuminates earth, and stars are the same as our sun, then am i correct in assuming that each star we see in the sky is illuminating an area of at least 90million miles!!!?? We see a little white dot from this far away but, does that little dot on each star actually cover 90 million miles? Is that little area honestly that large and if not, then how large is the illuminated area? Surely my assumption is wrong! Thanks.