What is a supermoon?
A "supermoon" occurs when the Moon reaches its closest point to Earth on its orbit.
Yesterday marked the closest the Moon will get to Earth for the entire year.
The supermoon, which is technically known as a perigee full moon, appears up to 14 per cent larger and 30 per cent brighter than when it is furthest from the earth.
How close is the moon during the effect?
During the effect, the moon will be just 221,824 miles away compared to a distance of 252,581 miles when it is furthest from the Earth.
Are there any adverse effects on the Earth during the effect?
Despite an ancient belief that there is a connection between a supermoon and the occurrence of major natural hazards, Discovery News dispelled this theory in a study last year.
The effects on Earth from a supermoon are minor. It should not affect the internal energy balance of the Earth because there are lunar tides every day according to NASA.
When will the effect happen again?
Skywatchers and astrology fans will have to wait until August 2014 to see the next supermoon.