WD 1856+534b—a freezing world with a surface temperature of -125 degrees Fahrenheit—exists where planets are normally scoured ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Now officially labeled a “dwarf planet,” Pluto may have lost its title ... Best Arizona road trips to kick off summer 'Not just a black shirt': Starbucks employees walk out over new dress ...

Apples-to-apples comparisons in the distant universe are hard to come by. Whether the subject is dwarf galaxies, supermassive black holes, or 'hot Jupiters,' astronomers can spend months or years ...