Hang the Wandering Stars we know from our night sky in your bedroom or bunk area at summer camp. The heliocentric model hits home with these Solar System String Lights from iScream that feature the planets in the galactic neighborhood. Backed with battery-powered LED lights, these Solar System String Lights light up to shine above your bed, or desk, or anywhere else you please. These lights are to only be used indoors. They're run off of two AA batteries which are not included. You're bound to gravitate toward these iScream String Lights.