>>17699520THE LUNAR ECLIPSE Schematic
partial (left)
Here Mercury moves in front of the Sun. If Mercury is at the right angle between the full moon, Earth and the Sun, a partial lunar eclipse can be observed.
penumbral (middle)
Here Venus moves in front of the Sun. If Venus is at the right angle between the full moon, Earth and the Sun, you can see a penumbral lunar eclipse
total (right)
Here the full moon, Venus and the sun line up directly opposite each other and between them is the earth. The total umbra of Venus is cast onto the full moon.