Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a ...

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have ...

American scientists believe they have discovered a new dwarf planet at the edge of the solar system. Named OF201, this object ...

The hunt for habitable worlds has become a hot topic in astronomy. For decades, the search has been focussed on planets in ...