Pluto was reclassified as a dwarf planet in 2006. This video explains the scientific reasoning behind its demotion, the IAU’s ...

Red dwarfs make up the vast majority of stars in the galaxy. Such ubiquity means they host the majority of rocky exoplanets ...

Newly released Mars images offer a detailed look at one of the Red Planet's oldest, most heavily cratered regions, a landscape shaped by billions of years of impacts, volcanism and erosion.

There's a whole slew of objects that astronomers aren't sure whether to classify as "failed stars" or "overgrown planets." ...

Ever since physicist Freeman Dyson first proposed the concept in 1960, the "Dyson sphere" has been the holy grail of ...

Degraded natural wealth is not just an environmental problem, it is also an economic liability. But achieving economic growth without harming the environment is not only possible but has already been ...