Are they stars? Are they planets? Or are they neither? Some rogue planetary mass objects that wander the cosmos alone could be created when young star systems clash, meaning they represent an entire ...

Trust me: There's actually a tip at the end of this column, but it's going to take me awhile to get there. Be patient -- I do have a point and I am getting to it. When it comes to comparing objects, ...

Astronomers have detected one of the darkest objects ever seen at a record cosmic distance—only with the assistance of gravity. The discovery is an important step toward the observation of dark matter ...

An international research collaboration, including Northwestern University astronomers, has detected a mystery object inside the puzzling area known as the "mass gap" -- the range that lies between ...