Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy.

Some rogue planetary mass objects that wander the ... difficult to explain how an event could be violent enough to eject a planet from its star system at high speeds while not separating it ...

WASHINGTON (Reuters) -- Eighteen rogue planets that seem to have broken ... They said they found a planet-rich region -- near a star in the constellation Orion -- where stars, brown dwarfs and ...