Rogue planet
![This video shows an artist's impression of the free-floating planet CFBDSIR J214947.2-040308.9.](/Images/godic/202501/14/-Artist's_impression_of_the_free-floating_planet_CFBDSIR_J214947.2-040308.9.ogv4806.jpg")
![Artist's conception of a Jupiter-size rogue planet.](/Images/godic/202501/14/Alone_in_Space_-_Astronomers_Find_New_Kind_of_Planet4806.jpg")
A rogue planet, also known as an interstellar planet, nomad planet, free-floating planet, orphan planet, wandering planet or starless planet, is a planetary-mass object that orbits the galaxy directly. They have either been ejected from the planetary system in which they formed or have never been gravitationally bound to any star or brown dwarf. There may be billions of rogue planets in the Milky Way.