Which sentence is true about polaris and the sun? a) polaris is not as bright as the sun because it is not hot. b) polaris seems smaller than the sun because it is farther away. c) polaris looks dimmer than the sun because it is a different color. d) polaris is not big like the sun because it does not give off light. 5) the best description of a light-year is a) the speed of light in a vacuum. b) the age of a one-year-old star. c) the distance light travels in a year. d) the time it takes light to travel from earth to the sun.