Manual Desktop Planetarium by Trippensee  #EL-400

Trippensee® Planetariums - durable gear-driven orreries demonstrate the motions of the Earth, Moon, Venus, and Sun. They clearly show phases, eclipses, seasons, tides, and more - making them perfect for classrooms, libraries, museums or home learning.

 

Trippensee Planetariums are not eligible for additional discounts.

Trippensee® Planetariums – Manual & Motorized Models

The Trippensee® Manual Planetarium (EL-400) and the Motorized Planetarium (item # EL- 500) are classic orreries designed to demonstrate the motions of the Earth, Moon, Venus, and Sun. Both models perform the same functions, but the motorized version includes a spring wire connection to the red arm, which powers the planetary system to revolve around the Sun automatically.

Built with durable gear and ladder chain drives, these planetariums provide smooth, reliable operation. The Earth maintains its 23.5° tilt, rotates on its axis, and revolves around the Sun - while the Moon orbits the Earth, always keeping one face turned toward it. Venus also revolves around the Sun and can be positioned by hand to show its phases and its place as the morning or evening star.

Demonstrated Phenomena:

* Phases of the Moon
* Solar and lunar eclipses
* Causes of night and day
* Changing seasons across Earth
* Reasons for summer and winter
* Solstices and equinoxes
* Earth’s axis and its relationship to the North Star
* Tides and their causes
* Equator, latitude, longitude, and meridians

For over 90 years, Trippensee planetariums have been trusted science teaching models for schools, libraries, museums and homes. Their chain-and-gear mechanism ensures long-lasting performance, making them an unmatched resource for anyone eager to explore the solar system in motion.

Perfect for classrooms, home learning, and astronomy enthusiasts.