What are the lunar phases?

lunar phases are different phases in the cycle of orbit the moon around Earth. As the Moon moves, people on Earth see different levels of its illuminated surface, from the new moon in which the Moon cannot be seen at all, up to the complete month in which people see the entire part of the moon lit by the sun. The completion of this cycle lasts a little less than 30 days and can be known collectively as a lunar cycle. Obvious waxing and the moon's diminution was clearly visible to human society, and many cultures have established their measurement of months around the Moon's movements. They also connected specific phases with different events and beliefs. For example, some cultures believed that the decaying months were associated with poor results in new efforts.

The lunar phases are quite easily explained by astronomy. At any moment, half the month and half the ground is illuminated by sunlight. Jaky moon orbit around Earth, different levels of illuminated areas, can be seen by people standing on the ground. When the moon is between the Earth and the Sun, the illuminated STRana is pointing away and creating a new month. Full months occur in the opposite situation when the earth is between the moon and the sun.

It could be expected to constantly cycle of lunar and solar eclipses that correspond to the lunar phases, except that the Earth's orbit and months are inclined rather than they occur along the straight line. This means that the perfect alignment needed for eclipse is actually quite rare.

When the moon grows, it is said that it is "waxing" while the "dwindling" moon shrinks. In the northern hemisphere, the phases of the moon move from the right side to the left side of the surface of the moon: if only the right quarter is illuminated, the moon waxes full, while a small sliver of darkness on the right side of the moon suggests that the moon is in retreat. The opposite applies to the southern hemisphere, and along the equator, the horizontal alignment actually appears crescents of decreasing and waxing months.

VariACE appearance of lunar phases around the world is explained by the relationship between the angles of the moon, the Earth and the Sun. Changes in the angle change the way people see the moon depending on where they are. These variations also explain why sunrise and sunset occur at different times.

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