Moon phases T-Shirt

Asset ID: 98310581 / Rob Atkins / Moon phases A lunar phase or phase of the moon is the appearance of the illuminated (lit) portion of the Moon as seen by an observer, usually on Earth. The lunar phases change cyclically as the Moon orbits the Earth, according to the changing relative positions of the Earth , Moon , and Sun . One half of the lunar surface is, but the portion of the illuminated hemisphere that is visible to an observer can vary from about 100% (full moon ) to 0% (new moon ). The lunar terminator is the boundary between the illuminated and unilluminated hemispheres. This page is not affiliated with, or endorsed by, anyone associated with the topic.