Supermoon' is a situation when the moon is slightly closer to Earth in its orbit than on average, and this effect is most noticeable when it occurs at the same time as a full moon. So, the moon may seem bigger although the difference in its distance from Earth is only a few percent at such times.

It is called a supermoon because this is a very noticeable alignment that at first glance would seem to have an effect.

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Make:	NIKON CORPORATION
Model:	NIKON D300
Exposure:	0.02 sec (1/50)
Aperture:	f/16.0
ISO Speed:	200
Focal Length:	300 mm
Lens:	70.0-300.0 mm f/4.5-5.6