What conditions are necessary for a total lunar eclipse?

new moon phase, three bodies in alignment, Earth between Sun and Moon

new moon phase, three bodies in alignment, Moon between Sun and Earth

full moon phase, three bodies in alignment, Earth between Sun and Moon

full moon phase, three bodies in alignment, Moon between Sun and Earth

1 answer

A total lunar eclipse occurs under the following conditions:

  • It must be a full moon phase (the Moon is on the opposite side of the Earth from the Sun).
  • The three bodies (Sun, Earth, and Moon) must be in alignment.
  • The Earth must be positioned between the Sun and the Moon.

Therefore, the correct condition from your options is:

full moon phase, three bodies in alignment, Earth between Sun and Moon.