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Earth, Sun and Moon

Esta actividad pertenece al libro de GeoGebra La Tierra y el Sol. In this construction, you can observe the positioning, relative to Earth, of the Sun and the Moon. The left panel displays the corresponding phase of the Moon as seen from Earth. Please note that the visualization of this phase depends on the observer's latitude on Earth (latitude of the red point). For example, during the waxing crescent phase, if you center Earth's view on the North Pole, the Moon appears "to the right" of the Sun, but when you center the view on the South Pole, the same Moon appears "to the left" of the Sun. Notice that the Moon is not found directly on the ecliptic but rather slightly above or below it. Its orbit, which varies over time, forms an angle of about 5° with the ecliptic and intersects it only at two points, known as nodes. Solar eclipses are only possible when the Moon is at a node (or near it) and is positioned between Earth and the Sun, as during a total solar eclipse, the observer must be aligned with the centers of the Moon and the Sun.
Author of the construction of GeoGebra: Rafael Losada