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Visually learn the phases of the moon
You can intuitively grasp the positions of the Sun, the Earth, and the moon through overhead and celestial sphere diagrams!
Manipulate the position of the moon and the sun
What are the positions of the Sun and the moon during a full moon?
Where is the Sun when the waning crescent transits the meridian?
You can answer these questions by turning the dial and checking their positions!
Observing the moon from various viewpoints
You can intuitively grasp the positions of the Sun, the Earth, and the moon through overhead and celestial sphere diagrams!
※The size and distance of celestial objects are not drawn to scale but exaggerated for easier understanding.
※For easier understanding, the Earth's orbit is made circular instead of elliptic while the inclination of the moon's orbit has been omitted.