crystal sun

In a process not unlike human aging, most stars entering the final chapter of their lives tend to shrink, shrivel and slowly turn white. Astronomers call these cold, dense husks of once-mighty stars white dwarfs and, unlike humans, their dotage can last for billions of years. In that time, stars with masses between about a tenth and eight times the mass of our sun burn up the last of their nuclear energy, shed their fiery outer layers and dwindle into ultracompact cores that pack about a sun’s-worth of mass into a planet-size package. While this might sound like an unglamorous … Read more