The four primary phases of the moon (new moon, first quarter, full moon, last quarter ... when the moon is a quarter of its way through its lunar cycle and journey around the Earth.
Thanks to the Moon’s orbit around Earth, the angle of sunlight hitting the lunar surface and being reflected back to our planet changes. That creates different lunar phases. The next Full Moon ...
STARGAZERS get to see a Full Moon roughly every 29.5 days – that's the time it takes to complete one lunar phase cycle. A Full Moon is visible when it's on the opposite side of the Earth to the Sun.