According to the passage, if two supernovas are observed and one of those supernovas is brighter than the other, scientists can conclude that A. the brighter supernova is moving closer to our galaxy at a higher speed B. the precise location of the supernova is measurable C. the brighter supernova may be closer to our own galaxy D. the brighter supernova is farther away from Earth by a distance that is roughly inversely proportional to the dim supernova E. the distance between the supernovas and our own galaxy is inversely proportional