A new moon.
When Earth is in between the Sun and the Moon, and the Moon is in its full phase, a lunar eclipse occurs. This happens when Earth's shadow falls on the Moon, causing it to darken and appear reddish in color.
The phase in which the moon is not visible from earth is called the "new" moon. It happens when the moon is aligned between the sun and the earth (every 28 days), which causes the side of the moon that we usually see to be in shadow.
During the new moon phase, the moon passes between the sun and the Earth, so the side of the moon facing Earth is not illuminated by the sun. This causes the moon to blend in with the bright daytime sky and is not visible to us.
If the Moon is between Earth and the Sun, it is not a phase, at all . . . it is a solar eclipse.
New moon.
New moon.
New moon.
new moon
New moon.
full moon
New moon.
During a new moon phase, the moon is located between the Earth and the Sun, so it is not visible from Earth.