What is the position of the sun, earth, and the moon during a full moon and during quarter phase?

1 Answer
José F.
Feb 7, 2016

During Full Moon, the Sun, Earth and Moon are disposed by this order forming an angle close to 180º.
During a quarter phase this angle is 90º.

Explanation:

As Earth and Moon don't move exactly in the same plane, the angle Sun, Earth,Moon is not exactly 180º. If it were like this, we would have a lunar eclipse every month.

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