PSO J318.5-22 - Visit the Planet with No Star, Where the Nightlife Never Ends - NASA JPL Space Tourism Poster

and enjoy the eternal nightlife on planet PSO J318.5-22. "Discovered in October 2013 using direct imaging, PSO J318.5-22 belongs to a special class of planets called rogue, or free-floating, planets. Wandering alone in the galaxy, they do not orbit a parent star. Not much is known about how these planets come to exist, but scientists theorize that they may be either failed stars or planets ejected from very young systems after an encounter with another planet. These rogue planets glow faintly from the heat of their formation. Once they cool down, they will be dancing in the dark."