4M Phosphorescent Pack. 4M Phosphorescent Nova Planets & Supernova is a fun set with 9 luminous planets and 20 luminous stars. How to give them light? Let the stars and planets 1 minute in the light baths. Turn off the light and you'll see them shine! All the forms contain a special fabric that can be recharged over and over again in the light. Hang them from the ceiling in your room and you will sleep under the stars! Size included package: 16 x 16 inches