Man in the Moon Man in the Moon The Man in the Moon refers to any of several pareidolic images of a human face, head or body that certain traditions recognize in the disc of the full moon. The images are composed of the dark areas of the lunar "maria", or "seas" and the lighter highlands of the lunar surface. There are various explanations for how the Man in the Moon came to be. A longstanding European tradition holds that the man was banished to the Moon for some crime. Christian lore commonly held that he is the man caught gathering sticks on the
Equinox zero. Its latitude will not be exactly zero, since Earth is not exactly in the plane of the ecliptic. Its declination will not be exactly zero either. (The ecliptic is defined by the barycenter of Earth and the Moon combined.) The modern definition of equinox is the instants when the Sun's apparent geocentric longitude is 0° (northward equinox) or 180° (southward equinox). See the adjacent diagram. Because of the precession of the Earth's axis, the position of the vernal point on the celestial sphere changes over time, and the equatorial and the ecliptic coordinate systems change accordingly. Thus when specifying