An eclipse
The moon is called a new moon when it is not visible on Earth due to its position in relation to the Sun.
When the moon is visible during the day, it is called a "day moon." This occurrence happens because of the moon's position in its orbit around Earth where it can be seen from Earth in daylight hours.
A new moon is when there is little of the moon visible, except possibly a thin crescent. A full moon is when all of the moon is visible.
When the moon is fully visible to observers on Earth, it is called a full moon. This occurs when the sun, Earth, and moon are aligned with the Earth in the middle, causing the moon to be fully illuminated by the sun.
The first visible thin slice of the moon is called a waxing crescent. It occurs when the illuminated portion of the moon is increasing but less than half.
The moon is called a new moon when it is not visible on Earth due to its position in relation to the Sun.
When the moon is visible during the day, it is called a "day moon." This occurrence happens because of the moon's position in its orbit around Earth where it can be seen from Earth in daylight hours.
A new moon is when there is little of the moon visible, except possibly a thin crescent. A full moon is when all of the moon is visible.
Full Moon
When the moon is fully visible to observers on Earth, it is called a full moon. This occurs when the sun, Earth, and moon are aligned with the Earth in the middle, causing the moon to be fully illuminated by the sun.
The first visible thin slice of the moon is called a waxing crescent. It occurs when the illuminated portion of the moon is increasing but less than half.
lunar eclipse
Each month the moon goes through phases from new moon to full moon. The last visible slice before a new moon is called a waning crescent.
it is called a waxing crescent
You can see all three of these. The phase of the moon when it is not visible is called new moon.
The waxing crescent is the first phase after the new moon.
The decreasing of the illuminated face of the Moon (full to new) is called "waning." (The opposite, increased illuminated area, is called waxing.)