A student learns that the sun is classified as a medium-size star and that many stars are much bigger and brighter. However, the student observes that other stars look very dim, even through a telescope. Why do other stars look much dimmer than the sun? a The sun appears yellow, which is more visible than other colors. b The sun is much closer to Earth than other stars are. c Other stars are made up of different gases than the sun is. d As light from other stars travel through space, it gets reflected.