This Motorized Solar System received a National Parenting Center Seal of Approval in 2001. This motorized revolving model includes the sun and the nine planets of our solar system. The sun is lighted with a bright bulb inside a yellow orb to shine onto the nine planets as they orbit around it. The central tower and the planetary support rods are black so that they disappear in a darkened room for a spectacular effect! The base features planetary longitude marks so the planets can be set up to their correct positions. The upper half of the sun is removable to convert the unit into a Stardome Planetarium to project stars and constellations on the walls and ceiling of a darkened room. The unit is powered by an A/C adapter (sold separately as an option) or four C-size batteries (not included). Recommended for ages 6 and up. Availability: Usually ships within one business day.