Illuminated Orbiter Cool Assorted They are acid free

They are acid free

Measures 24" x 36"

and color to your projects

UPC: 9780152626112

and students can wear the headphones for an extended period of time

Illuminated Orbiter Cool Assorted They are acid freeMPN: 006607 UPC: 656727864649 Plug in this unit and Illuminate the Sun to effectively demonstrate daylight, night, seasons, and phases of the Moon. The Sun, Earth and Moon 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.