Quick Answer: The Sun, the Earth and the Moon model is a geared tellurian for showing day and night, seasons, lunar phases and eclipses. A 5 W LED sun with collimating lenses lights a tilted 100 mm Earth sphere while a lunar orbit loop carries the Moon.
Last updated: October 2026
Key Features
5 W LED sun core in a spherical dome with collimating lenses
Earth sphere 100 mm in diameter with axial tilt and geographic detail
Synchronised gear train linking Earth and Moon movements
Lunar orbit loop that keeps the same face of the Moon towards the Earth
Base plate with a calendar ring showing months, dates and seasons
Manual drive handle to move the model forwards or backwards in time
Technical Specifications
Specification
Value
Sun
5 W LED, collimating lenses
Earth
100 mm diameter polymer sphere, tilted axis
Drive
Manual handle, synchronised gear train
Base
Calendar ring with months and seasons
About This Product
Turning the handle lets a class follow the Earth through a day and a year, see why the tilted axis gives longer days and stronger sunlight in summer, and track the Moon through its phases over a synodic month of about 29.5 days. Lining up the three bodies shows the umbra and penumbra of solar and lunar eclipses.
Frequently Asked Questions
Can the model show eclipses?
Yes. When the Sun, Earth and Moon are lined up, the LED sun casts umbra and penumbra shadows for solar eclipses, and the Earth’s shadow falls on the Moon for lunar eclipses.
How is the model moved?
A manual drive handle turns the gear train, and it can be run forwards or backwards.
