As our telescopes grow more powerful, astronomers are uncovering objects that defy conventional wisdom. The latest example is the discovery of a planet-like object circling a brown dwarf. It’s the ...

Pluto's years-long identity crisis just got more complex on Wednesday. The International Astronomical Union has decided on the term "plutoid" as a name for Pluto and other objects that just two years ...

A FARAWAY rock nicknamed DeeDee could be big enough to be a dwarf planet. Astronomers define dwarf planets as worlds that are massive enough for their gravity to make them spherical, but not big ...

Pluto's years-long identity crisis just got more complex today. The International Astronomical Union has decided on the term "plutoid" as a name for Pluto and other objects that just two years ago ...

Some NASA scientists have joined together to propose a new definition for a planet that would let Pluto back into the fold. It's been more than a decade since Pluto got demoted from planet to dwarf ...