UGEARS Model Kit Mechanical Tellurium, 249 Components, 3D Puzzle

Where is my place in the universe? Where am I moving? We cannot assist you with the metaphysical aspect of these questions, but this wooden puzzle will help you understand your journey as a passenger on planet Earth and the connections and relationships with some of your nearest celestial neighbors. We all experience the regular cycles of day and night, the phases of the moon, the changing of the seasons, and the passing of the years. But who among us truly understands these phenomena? Who can explain what lies behind the clocks and calendars that dictate our lives? Every child can tell you how old they are, but if you ask them how many times they have orbited the sun, you will be met with astonished looks or amusing answers: One hundred twenty-seven times? Ten thousand? Once? Never?

Assemble the exciting Tellurium kit and enjoy showing it to your family and friends. They will all be able to better understand the firmament, the seasons, and even the concept of time with this wooden model. Turn the crank to set the precisely calibrated gear system in motion. One turn of the crank corresponds to one rotation of the Earth on its axis, which equals one day. Point to a spot on the surface of the Earth, observe the position of the rotating Earth in relation to the sun, and imagine sunrise and sunset, the transition from day to night. The Tellurium illustrates that the phases of the moon are a function of the moon's position in relation to the sun and the Earth. As it orbits, the moon rises and falls slightly, changing its trajectory. The Earth's orbit around the sun, along with the correct representation of the Earth's axial tilt of 23.5 degrees, explains why...