The Moon’s distance from the Earth is not always the same due to the elliptical shape of the orbit and variations in the gravitational attraction between the Moon, Earth and Sun.
When a full moon occurs close to the perigee of the Moon (a point of its closest approach to the Earth) and its distance from our planet is much smaller than the usual one, then we can observe a “super moon” phenomenon.
Perigee is the point at which an object makes its closest approach to the Earth. Often the term is used in a broader sense to define the point in an orbit where the orbiting body is closest to the body it orbits. The opposite is the apogee, the farthest or highest point.
Nikon D300s – 70-200mm lens + 2 x Teleconveter
PSE-9 – some cropping
Taken: May 5 2012 – Kitchener, Ontario – 9:31pm