Light up the Sun with this version of the Orbiter. The model can be plugged into a standard wall outlet (UL approved - 8' power cord) to illuminate the Sun to effectively demonstrate daylight, night, seasons, and phases of the Moon. The Sun, Earth and Moon manually revolve around one another on this gear-driven model. The earth and moon are shown in true scale. The scale is 1 inch = 2000 miles. If the sun were to be shown at the same scale, it would be approximately 36 feet in diameter! Arm is 15", Sun is 6" and the Earth is 4" in diameter. Includes an 8 page Lesson Plan which includes basic investigations and activities on Day and Night, The Seasons, The Moon, plus Observations and Activities.