Phases of the moon

Why do phases occur?

As it circles Earth, the Moon has phases, which allows the portion we see illuminated to change. It takes 27.3 days for the Moon to orbit Earth, but 29.5 days is the lunar phase (from the new Moon to the new Moon). The Moon rises as the Sun sets, with the side facing Earth entirely open for sunlight.

What are these phases?

Image result for why do the phases of the moon occur

New Moon: Completely dark 

Young: The beginning of a lunar month

Waxing: The illumination of the moon is growing

Crescent: Less than half of the moon is illuminated

Quarter: Exactly half of the moon is illuminated, and half of it is in darkness

Gibbous: More than half of the moon is illuminated

Full Moon: The entirety of the moon is illuminated

Waning: The illumination of the moon is decreasing

Old: the end of a lunar month

Ahmad Addas

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