ALL STARS' LIGHT A superbright galaxy called a blazar sends out a flood of radiation in this illustration. On its way to Earth, some of that radiation slams into vestiges of light from all the stars that have ever existed.
JPL-Caltech/NASA
ALL STARS' LIGHT A superbright galaxy called a blazar sends out a flood of radiation in this illustration. On its way to Earth, some of that radiation slams into vestiges of light from all the stars that have ever existed.
JPL-Caltech/NASA