During a lunar eclipse, which phase is the moon in?

The moon is in the full moon phase during a lunar eclipse. This is because a lunar eclipse occurs when the Earth is positioned directly between the sun and the moon, causing the Earth's shadow to fall on the moon. For this alignment to happen, the moon must be fully illuminated by the sun, which occurs only during the full moon phase. At this time, the entire face of the moon is visible from Earth, allowing the shadow cast by the Earth to completely cover it during the eclipse. The other phases, such as new moon, half moon, or quarter moon, do not create the necessary alignment for an eclipse since the moon would not be fully illuminated by the sun during those times.